Kelvin Herrera

Free Agent

Age: 34

Bats/Throws: R/R

5'10" / 200

DOB: 12/31/1989

(34 years, 6 months, 23 days)

Stats

Partial SeasonsPostseasonMinor LeaguesSpring TrainingRegular MLB Seasons

Season	Team	Level	Age	W W - Wins	L L - Losses	SV SV - Saves	G G - Games Pitched	GS GS - Games Started	IP IP - Innings Pitched	K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP)	BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP)	HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP)	BABIP BABIP - Batting Average on Balls in Play	LOB% LOB% - Left on Base Percentage	GB% GB% - Ground Ball Percentage (GB/BIP)	HR/FB HR/FB - Home Run to Fly Ball Ratio	vFA vFA - Fourseam Fastball velocity (Pitch Info)	ERA ERA - Earned Run Average ((ER*9)/IP)	xERA xERA - Expected ERA	FIP FIP - Fielder Independent Pitching on an ERA scale	xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced	WAR WAR - Wins Above Replacement
2007	KCR	R	17	4	1	1	11	5	42.2	10.55	3.16	0.21	.284	89.9%				0.84		2.34	2.35
2008	KCR	R	18	2	2	0	11	8	50.2	7.99	0.89	0.00	.331	69.6%	58.5%	0.0%		1.42		2.48	3.19
2008	KCR	A	18	2	0	0	3	1	12.2	4.97	1.42	0.00	.302	75.0%	54.8%	0.0%		2.13		2.89	3.83
2009	KCR	A	19	1	0	0	1	1	5.0	1.80	0.00	0.00	.188	100.0%	62.5%	0.0%		0.00		3.19	3.91
2010	KCR	A	20	2	3	0	8	8	41.1	8.71	3.27	0.44	.321	68.3%	50.0%	5.0%		4.35		3.71	3.90
2011	KCR	A+	21	2	1	1	8	0	14.2	7.36	1.23	0.61	.184	100.0%	56.8%	7.7%		0.61		2.89	2.75
2011	KCR	AA	21	4	0	7	23	0	36.0	10.00	1.50	1.00	.207	85.5%	63.5%	18.2%		1.75		3.18	2.52
2011	KCR	AAA	21	1	0	6	14	0	17.0	9.53	3.71	0.53	.250	79.5%	60.5%	7.7%		2.12		3.67	3.90
2011	KCR Royals	MLB	21	0	1	0	2	0	2.0	0.00	0.00	4.50	.143	0.0%	28.6%	25.0%	97.9	13.50		11.03	7.04	-0.2
2012	KCR Royals (ST)	ST	22	0	0	2	11	0	13.0	10.38	3.46	0.00	.343	76.5%	60.6%	0.0%		1.38		2.35	3.07
2012	KCR Royals	MLB	22	4	3	3	76	0	84.1	8.22	2.24	0.43	.313	80.9%	55.5%	6.9%	99.2	2.35		2.70	3.10	1.8
2013	KCR	AA	23	0	0	0	2	0	2.0	22.50	0.00	0.00	.500	100.0%	50.0%	0.0%		0.00		-1.94	-1.94
2013	KCR	AAA	23	0	1	2	10	3	16.0	12.38	3.38	0.56	.161	95.2%	45.2%	7.7%		1.13		3.13	3.22
2013	KCR Royals (ST)	ST	23	0	0	0	8	0	7.1	7.36	3.68	0.00	.167	100.0%	61.1%	0.0%		0.00		3.30	4.57
2013	KCR Royals	MLB	23	5	7	2	59	0	58.1	11.42	3.24	1.39	.281	75.3%	47.6%	18.0%	99.0	3.86		3.70	2.86	0.5
2014	KCR Royals (ST)	ST	24	0	0	0	12	0	10.2	8.44	4.22	1.69	.222	49.0%	53.6%	28.6%		4.22		5.69	4.01
2014	KCR Royals	MLB	24	4	3	0	70	0	70.0	7.59	3.34	0.00	.274	85.5%	49.2%	0.0%	99.0	1.41		2.69	3.50	1.3
2014	KCR Royals	MLB	24	1	0	0	11	0	15.0	9.60	4.20	0.00	.289	83.3%	57.9%	0.0%		1.80		2.40	3.06
2015	KCR Royals (ST)	ST	25	1	0	0	10	0	9.2	7.45	1.86	0.00	.241	77.8%	60.7%	0.0%		1.86		2.55	2.94
2015	KCR Royals	MLB	25	4	3	0	72	0	69.2	8.27	3.36	0.65	.249	78.1%	44.7%	8.1%	98.8	2.71	3.61	3.44	3.82	0.6
2015	KCR Royals	MLB	25	1	0	0	11	0	13.2	14.49	1.98	0.00	.345	84.6%	31.0%	0.0%		0.66		0.57	2.19
2016	KCR Royals (ST)	ST	26	0	0	0	10	0	10.0	9.00	1.80	0.90	.160	53.6%	48.0%	14.3%		3.60		3.63	3.45
2016	KCR Royals	MLB	26	2	6	12	72	0	72.0	10.75	1.50	0.75	.290	77.0%	44.2%	10.0%	97.9	2.75	2.61	2.47	2.77	2.1
2017	KCR Royals (ST)	ST	27	0	0	0	10	0	10.0	8.10	0.90	0.90	.351	75.3%	51.5%	11.1%		2.70		3.75	3.91
2017	KCR Royals	MLB	27	3	3	26	64	0	59.1	8.49	3.03	1.37	.295	70.2%	47.5%	14.5%	97.8	4.25	4.27	4.30	4.19	0.2
2018	KCR Royals (ST)	ST	28	0	0	0	8	0	8.0	4.50	3.38	1.13	.370	71.4%	53.6%	25.0%		5.63		5.36	4.58
2018	2 Tms	MLB	28	2	3	17	48	0	44.1	7.71	2.03	1.22	.287	92.1%	35.6%	10.5%	97.0	2.44	3.79	3.95	4.31	0.5
2018	KCR Royals	MLB	28	1	1	14	27	0	25.2	7.71	0.70	0.70	.246	98.9%	37.1%	6.7%	96.8	1.05		2.69	3.61	0.7
2018	WSN Nationals	MLB	28	1	2	3	21	0	18.2	7.71	3.86	1.93	.333	87.6%	33.9%	14.8%	97.4	4.34		5.68	5.28	-0.3
2019	CHW	AAA	29	0	1	0	3	1	3.0	6.00	0.00	6.00	.300	45.5%	33.3%	33.3%		12.00		10.96	5.94
2019	CHW White Sox (ST)	ST	29	0	0	0	8	0	7.2	8.22	1.17	1.17	.111	76.9%	42.1%	16.7%		2.35		3.99	3.70
2019	CHW White Sox	MLB	29	3	3	1	57	0	51.1	9.29	4.03	1.40	.347	65.9%	35.7%	13.6%	96.1	6.14	4.54	4.58	4.84	0.4
2020	CHW White Sox (ST)	ST	30	0	0	0	4	0	4.0	13.50	2.25	0.00	.500	57.1%	50.0%	0.0%		6.75		2.09	2.55
2020	CHW White Sox	MLB	30	0	0	0	2	0	2.1	11.57	3.86	7.71	.200	0.0%	14.3%	66.7%	94.2	15.43	7.08	13.05	4.38	-0.1
Total	- - -	MLB		27	32	61	522	0	513.2	8.94	2.80	0.88	.290	77.5%	45.7%	10.8%	98.3	3.21		3.44	3.60	7.1
Postseason	- - -	MLB		2	0	0	22	0	28.2	11.93	3.14	0.00	.313	83.9%	46.3%	0.0%		1.26		1.53	2.65

Season	Team	Level	Age	W W - Wins	L L - Losses	SV SV - Saves	G G - Games Pitched	GS GS - Games Started	IP IP - Innings Pitched	K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP)	BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP)	HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP)	BABIP BABIP - Batting Average on Balls in Play	LOB% LOB% - Left on Base Percentage	GB% GB% - Ground Ball Percentage (GB/BIP)	HR/FB HR/FB - Home Run to Fly Ball Ratio	vFA vFA - Fourseam Fastball velocity (Pitch Info)	ERA ERA - Earned Run Average ((ER*9)/IP)	xERA xERA - Expected ERA	FIP FIP - Fielder Independent Pitching on an ERA scale	xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced	WAR WAR - Wins Above Replacement
2007	KCR	R	17	4	1	1	11	5	42.2	10.55	3.16	0.21	.284	89.9%				0.84		2.34	2.35
2008	KCR	R	18	2	2	0	11	8	50.2	7.99	0.89	0.00	.331	69.6%	58.5%	0.0%		1.42		2.48	3.19
2008	KCR	A	18	2	0	0	3	1	12.2	4.97	1.42	0.00	.302	75.0%	54.8%	0.0%		2.13		2.89	3.83
2009	KCR	A	19	1	0	0	1	1	5.0	1.80	0.00	0.00	.188	100.0%	62.5%	0.0%		0.00		3.19	3.91
2010	KCR	A	20	2	3	0	8	8	41.1	8.71	3.27	0.44	.321	68.3%	50.0%	5.0%		4.35		3.71	3.90
2011	KCR	A+	21	2	1	1	8	0	14.2	7.36	1.23	0.61	.184	100.0%	56.8%	7.7%		0.61		2.89	2.75
2011	KCR	AA	21	4	0	7	23	0	36.0	10.00	1.50	1.00	.207	85.5%	63.5%	18.2%		1.75		3.18	2.52
2011	KCR	AAA	21	1	0	6	14	0	17.0	9.53	3.71	0.53	.250	79.5%	60.5%	7.7%		2.12		3.67	3.90
2011	KCR Royals	MLB	21	0	1	0	2	0	2.0	0.00	0.00	4.50	.143	0.0%	28.6%	25.0%	97.9	13.50		11.03	7.04	-0.2
2012	KCR Royals (ST)	ST	22	0	0	2	11	0	13.0	10.38	3.46	0.00	.343	76.5%	60.6%	0.0%		1.38		2.35	3.07
2012	KCR Royals	MLB	22	4	3	3	76	0	84.1	8.22	2.24	0.43	.313	80.9%	55.5%	6.9%	99.2	2.35		2.70	3.10	1.8
2013	KCR	AA	23	0	0	0	2	0	2.0	22.50	0.00	0.00	.500	100.0%	50.0%	0.0%		0.00		-1.94	-1.94
2013	KCR	AAA	23	0	1	2	10	3	16.0	12.38	3.38	0.56	.161	95.2%	45.2%	7.7%		1.13		3.13	3.22
2013	KCR Royals (ST)	ST	23	0	0	0	8	0	7.1	7.36	3.68	0.00	.167	100.0%	61.1%	0.0%		0.00		3.30	4.57
2013	KCR Royals	MLB	23	5	7	2	59	0	58.1	11.42	3.24	1.39	.281	75.3%	47.6%	18.0%	99.0	3.86		3.70	2.86	0.5
2014	KCR Royals (ST)	ST	24	0	0	0	12	0	10.2	8.44	4.22	1.69	.222	49.0%	53.6%	28.6%		4.22		5.69	4.01
2014	KCR Royals	MLB	24	4	3	0	70	0	70.0	7.59	3.34	0.00	.274	85.5%	49.2%	0.0%	99.0	1.41		2.69	3.50	1.3
2014	KCR Royals	MLB	24	1	0	0	11	0	15.0	9.60	4.20	0.00	.289	83.3%	57.9%	0.0%		1.80		2.40	3.06
2015	KCR Royals (ST)	ST	25	1	0	0	10	0	9.2	7.45	1.86	0.00	.241	77.8%	60.7%	0.0%		1.86		2.55	2.94
2015	KCR Royals	MLB	25	4	3	0	72	0	69.2	8.27	3.36	0.65	.249	78.1%	44.7%	8.1%	98.8	2.71	3.61	3.44	3.82	0.6
2015	KCR Royals	MLB	25	1	0	0	11	0	13.2	14.49	1.98	0.00	.345	84.6%	31.0%	0.0%		0.66		0.57	2.19
2016	KCR Royals (ST)	ST	26	0	0	0	10	0	10.0	9.00	1.80	0.90	.160	53.6%	48.0%	14.3%		3.60		3.63	3.45
2016	KCR Royals	MLB	26	2	6	12	72	0	72.0	10.75	1.50	0.75	.290	77.0%	44.2%	10.0%	97.9	2.75	2.61	2.47	2.77	2.1
2017	KCR Royals (ST)	ST	27	0	0	0	10	0	10.0	8.10	0.90	0.90	.351	75.3%	51.5%	11.1%		2.70		3.75	3.91
2017	KCR Royals	MLB	27	3	3	26	64	0	59.1	8.49	3.03	1.37	.295	70.2%	47.5%	14.5%	97.8	4.25	4.27	4.30	4.19	0.2
2018	KCR Royals (ST)	ST	28	0	0	0	8	0	8.0	4.50	3.38	1.13	.370	71.4%	53.6%	25.0%		5.63		5.36	4.58
2018	2 Tms	MLB	28	2	3	17	48	0	44.1	7.71	2.03	1.22	.287	92.1%	35.6%	10.5%	97.0	2.44	3.79	3.95	4.31	0.5
2018	KCR Royals	MLB	28	1	1	14	27	0	25.2	7.71	0.70	0.70	.246	98.9%	37.1%	6.7%	96.8	1.05		2.69	3.61	0.7
2018	WSN Nationals	MLB	28	1	2	3	21	0	18.2	7.71	3.86	1.93	.333	87.6%	33.9%	14.8%	97.4	4.34		5.68	5.28	-0.3
2019	CHW	AAA	29	0	1	0	3	1	3.0	6.00	0.00	6.00	.300	45.5%	33.3%	33.3%		12.00		10.96	5.94
2019	CHW White Sox (ST)	ST	29	0	0	0	8	0	7.2	8.22	1.17	1.17	.111	76.9%	42.1%	16.7%		2.35		3.99	3.70
2019	CHW White Sox	MLB	29	3	3	1	57	0	51.1	9.29	4.03	1.40	.347	65.9%	35.7%	13.6%	96.1	6.14	4.54	4.58	4.84	0.4
2020	CHW White Sox (ST)	ST	30	0	0	0	4	0	4.0	13.50	2.25	0.00	.500	57.1%	50.0%	0.0%		6.75		2.09	2.55
2020	CHW White Sox	MLB	30	0	0	0	2	0	2.1	11.57	3.86	7.71	.200	0.0%	14.3%	66.7%	94.2	15.43	7.08	13.05	4.38	-0.1
Total	- - -	MLB		27	32	61	522	0	513.2	8.94	2.80	0.88	.290	77.5%	45.7%	10.8%	98.3	3.21		3.44	3.60	7.1
Postseason	- - -	MLB		2	0	0	22	0	28.2	11.93	3.14	0.00	.313	83.9%	46.3%	0.0%		1.26		1.53	2.65

Partial SeasonsPostseasonMinor LeaguesSpring TrainingRegular MLB Seasons

Season	Team	Level	W W - Wins	L L - Losses	ERA ERA - Earned Run Average ((ER*9)/IP)	G G - Games Pitched	GS GS - Games Started	QS	SV SV - Saves	HLD HLD - Holds	BS BS - Blown Saves	IP IP - Innings Pitched	TBF TBF - Total Batters Faced	H H - Hits Allowed	R R - Runs Allowed	ER ER - Earned Runs	HR HR - Home Runs	BB BB - Walks	IBB IBB - Intentional	HBP HBP - Hit Batters	WP WP - Wild Pitches	BK BK - Balks	SO SO - Strikeouts
2007	KCR	R	4	1	0.84	11	5		1	0	0	42.2	170	30	6	4	1	15	1	2	2	0	50
2008	KCR	R	2	2	1.42	11	8		0	1	0	50.2	198	48	17	8	0	5	0	3	2	1	45
2008	KCR	A	2	0	2.13	3	1		0	0	0	12.2	53	13	4	3	0	2	0	1	1	0	7
2009	KCR	A	1	0	0.00	1	1		0	0	0	5.0	17	3	0	0	0	0	0	0	0	0	1
2010	KCR	A	2	3	4.35	8	8		0	0	0	41.1	173	38	20	20	2	15	0	4	1	0	40
2011	KCR	A+	2	1	0.61	8	0		1	1	0	14.2	53	8	1	1	1	2	0	0	0	0	12
2011	KCR	AA	4	0	1.75	23	0		7	1	3	36.0	138	22	9	7	4	6	2	1	0	1	40
2011	KCR	AAA	1	0	2.12	14	0		6	3	0	17.0	70	12	5	4	1	7	0	0	0	0	18
2011	KCR Royals	MLB	0	1	13.50	2	0	0	0	1	0	2.0	9	2	3	3	1	0	0	1	0	0	0
2012	KCR Royals (ST)	ST	0	0	1.38	11	0		2	2	1	13.0	55	12	4	2	0	5	0	0	0	0	15
2012	KCR Royals	MLB	4	3	2.35	76	0	0	3	19	1	84.1	344	79	24	22	4	21	6	2	3	1	77
2013	KCR	AA	0	0	0.00	2	0		0	1	0	2.0	7	1	0	0	0	0	0	0	0	0	5
2013	KCR	AAA	0	1	1.13	10	3		2	0	0	16.0	62	6	2	2	1	6	1	2	0	0	22
2013	KCR Royals (ST)	ST	0	0	0.00	8	0		0	4	0	7.1	27	3	0	0	0	3	0	0	0	0	6
2013	KCR Royals	MLB	5	7	3.86	59	0	0	2	20	2	58.1	245	48	27	25	9	21	2	2	5	0	74
2014	KCR Royals (ST)	ST	0	0	4.22	12	0		0	1	2	10.2	44	8	8	5	2	5	0	0	0	0	10
2014	KCR Royals	MLB	4	3	1.41	70	0	0	0	20	1	70.0	285	54	12	11	0	26	0	3	1	0	59
2014	KCR Royals	MLB	1	0	1.80	11	0	0	0	3	0	15.0	61	11	3	3	0	7	0	0	0	0	16
2015	KCR Royals (ST)	ST	1	0	1.86	10	0		0	5	2	9.2	39	7	2	2	0	2	0	0	0	0	8
2015	KCR Royals	MLB	4	3	2.71	72	0	0	0	21	7	69.2	286	52	23	21	5	26	1	2	4	0	64
2015	KCR Royals	MLB	1	0	0.66	11	0	0	0	3	0	13.2	54	10	2	1	0	3	0	0	0	0	22
2016	KCR Royals (ST)	ST	0	0	3.60	10	0		0	3	0	10.0	38	5	4	4	1	2	0	0	0	0	10
2016	KCR Royals	MLB	2	6	2.75	72	0	0	12	26	3	72.0	283	57	23	22	6	12	0	3	3	0	86
2017	KCR Royals (ST)	ST	0	0	2.70	10	0		0	1	0	10.0	49	14	5	3	1	1	0	1	0	0	9
2017	KCR Royals	MLB	3	3	4.25	64	0	0	26	4	5	59.1	259	60	33	28	9	20	2	1	2	0	56
2018	KCR Royals (ST)	ST	0	0	5.63	8	0		0	1	0	8.0	35	11	5	5	1	3	0	0	0	0	4
2018	2 Tms	MLB	2	3	2.44	48	0	0	17	2	2	44.1	184	43	12	12	6	10	0	1	0	1	38
2018	KCR Royals	MLB	1	1	1.05	27	0	0	14	0	2	25.2	95	19	3	3	2	2	0	0	0	0	22
2018	WSN Nationals	MLB	1	2	4.34	21	0	0	3	2	0	18.2	89	24	9	9	4	8	0	1	0	1	16
2019	CHW	AAA	0	1	12.00	3	1		0	0	0	3.0	14	5	4	4	2	0	0	0	0	0	2
2019	CHW White Sox (ST)	ST	0	0	2.35	8	0		0	1	0	7.2	27	3	2	2	1	1	0	0	0	0	7
2019	CHW White Sox	MLB	3	3	6.14	57	0	0	1	6	2	51.1	235	60	36	35	8	23	6	1	8	2	53
2020	CHW White Sox (ST)	ST	0	0	6.75	4	0		0	0	0	4.0	18	5	3	3	0	1	0	1	0	0	6
2020	CHW White Sox	MLB	0	0	15.43	2	0	0	0	0	0	2.1	11	3	4	4	2	1	0	0	0	0	3
Total	- - -	MLB	27	32	3.21	522	0	0	61	119	23	513.2	2141	458	197	183	50	160	17	16	26	4	510
Postseason	- - -	MLB	2	0	1.26	22	0	0	0	6	0	28.2	115	21	5	4	0	10	0	0	0	0	38

Season	Team	Level	W W - Wins	L L - Losses	ERA ERA - Earned Run Average ((ER*9)/IP)	G G - Games Pitched	GS GS - Games Started	QS	SV SV - Saves	HLD HLD - Holds	BS BS - Blown Saves	IP IP - Innings Pitched	TBF TBF - Total Batters Faced	H H - Hits Allowed	R R - Runs Allowed	ER ER - Earned Runs	HR HR - Home Runs	BB BB - Walks	IBB IBB - Intentional	HBP HBP - Hit Batters	WP WP - Wild Pitches	BK BK - Balks	SO SO - Strikeouts
2007	KCR	R	4	1	0.84	11	5		1	0	0	42.2	170	30	6	4	1	15	1	2	2	0	50
2008	KCR	R	2	2	1.42	11	8		0	1	0	50.2	198	48	17	8	0	5	0	3	2	1	45
2008	KCR	A	2	0	2.13	3	1		0	0	0	12.2	53	13	4	3	0	2	0	1	1	0	7
2009	KCR	A	1	0	0.00	1	1		0	0	0	5.0	17	3	0	0	0	0	0	0	0	0	1
2010	KCR	A	2	3	4.35	8	8		0	0	0	41.1	173	38	20	20	2	15	0	4	1	0	40
2011	KCR	A+	2	1	0.61	8	0		1	1	0	14.2	53	8	1	1	1	2	0	0	0	0	12
2011	KCR	AA	4	0	1.75	23	0		7	1	3	36.0	138	22	9	7	4	6	2	1	0	1	40
2011	KCR	AAA	1	0	2.12	14	0		6	3	0	17.0	70	12	5	4	1	7	0	0	0	0	18
2011	KCR Royals	MLB	0	1	13.50	2	0	0	0	1	0	2.0	9	2	3	3	1	0	0	1	0	0	0
2012	KCR Royals (ST)	ST	0	0	1.38	11	0		2	2	1	13.0	55	12	4	2	0	5	0	0	0	0	15
2012	KCR Royals	MLB	4	3	2.35	76	0	0	3	19	1	84.1	344	79	24	22	4	21	6	2	3	1	77
2013	KCR	AA	0	0	0.00	2	0		0	1	0	2.0	7	1	0	0	0	0	0	0	0	0	5
2013	KCR	AAA	0	1	1.13	10	3		2	0	0	16.0	62	6	2	2	1	6	1	2	0	0	22
2013	KCR Royals (ST)	ST	0	0	0.00	8	0		0	4	0	7.1	27	3	0	0	0	3	0	0	0	0	6
2013	KCR Royals	MLB	5	7	3.86	59	0	0	2	20	2	58.1	245	48	27	25	9	21	2	2	5	0	74
2014	KCR Royals (ST)	ST	0	0	4.22	12	0		0	1	2	10.2	44	8	8	5	2	5	0	0	0	0	10
2014	KCR Royals	MLB	4	3	1.41	70	0	0	0	20	1	70.0	285	54	12	11	0	26	0	3	1	0	59
2014	KCR Royals	MLB	1	0	1.80	11	0	0	0	3	0	15.0	61	11	3	3	0	7	0	0	0	0	16
2015	KCR Royals (ST)	ST	1	0	1.86	10	0		0	5	2	9.2	39	7	2	2	0	2	0	0	0	0	8
2015	KCR Royals	MLB	4	3	2.71	72	0	0	0	21	7	69.2	286	52	23	21	5	26	1	2	4	0	64
2015	KCR Royals	MLB	1	0	0.66	11	0	0	0	3	0	13.2	54	10	2	1	0	3	0	0	0	0	22
2016	KCR Royals (ST)	ST	0	0	3.60	10	0		0	3	0	10.0	38	5	4	4	1	2	0	0	0	0	10
2016	KCR Royals	MLB	2	6	2.75	72	0	0	12	26	3	72.0	283	57	23	22	6	12	0	3	3	0	86
2017	KCR Royals (ST)	ST	0	0	2.70	10	0		0	1	0	10.0	49	14	5	3	1	1	0	1	0	0	9
2017	KCR Royals	MLB	3	3	4.25	64	0	0	26	4	5	59.1	259	60	33	28	9	20	2	1	2	0	56
2018	KCR Royals (ST)	ST	0	0	5.63	8	0		0	1	0	8.0	35	11	5	5	1	3	0	0	0	0	4
2018	2 Tms	MLB	2	3	2.44	48	0	0	17	2	2	44.1	184	43	12	12	6	10	0	1	0	1	38
2018	KCR Royals	MLB	1	1	1.05	27	0	0	14	0	2	25.2	95	19	3	3	2	2	0	0	0	0	22
2018	WSN Nationals	MLB	1	2	4.34	21	0	0	3	2	0	18.2	89	24	9	9	4	8	0	1	0	1	16
2019	CHW	AAA	0	1	12.00	3	1		0	0	0	3.0	14	5	4	4	2	0	0	0	0	0	2
2019	CHW White Sox (ST)	ST	0	0	2.35	8	0		0	1	0	7.2	27	3	2	2	1	1	0	0	0	0	7
2019	CHW White Sox	MLB	3	3	6.14	57	0	0	1	6	2	51.1	235	60	36	35	8	23	6	1	8	2	53
2020	CHW White Sox (ST)	ST	0	0	6.75	4	0		0	0	0	4.0	18	5	3	3	0	1	0	1	0	0	6
2020	CHW White Sox	MLB	0	0	15.43	2	0	0	0	0	0	2.1	11	3	4	4	2	1	0	0	0	0	3
Total	- - -	MLB	27	32	3.21	522	0	0	61	119	23	513.2	2141	458	197	183	50	160	17	16	26	4	510
Postseason	- - -	MLB	2	0	1.26	22	0	0	0	6	0	28.2	115	21	5	4	0	10	0	0	0	0	38

Partial SeasonsPostseasonMinor LeaguesSpring TrainingRegular MLB SeasonsAverages

Season	Team	Level	K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP)	BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP)	K/BB K/BB - Strikeout to Walk Ratio (SO/BB)	HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP)	K% K% - Strikeout Percentage (SO/TBF)	BB% BB% - Walk Percentage (BB/TBF)	K-BB% K-BB% - The difference between strikeout percentage and walk percentage	AVG AVG - Batting Average Against	WHIP WHIP - Walks + Hits divided by Innings Pitched	BABIP BABIP - Batting Average on Balls in Play	LOB% LOB% - Left on Base Percentage	ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better	FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better	FIP FIP - Fielder Independent Pitching on an ERA scale
2007	KCR	R	10.55	3.16	3.33	0.21	29.4%	8.8%	20.6%	.196	1.05	.284	89.9%			2.34
2008	KCR	R	7.99	0.89	9.00	0.00	22.7%	2.5%	20.2%	.253	1.05	.331	69.6%			2.48
2008	KCR	A	4.97	1.42	3.50	0.00	13.2%	3.8%	9.4%	.260	1.18	.302	75.0%			2.89
2009	KCR	A	1.80	0.00	1.00	0.00	5.9%	0.0%	5.9%	.176	0.60	.188	100.0%			3.19
2010	KCR	A	8.71	3.27	2.67	0.44	23.1%	8.7%	14.5%	.247	1.28	.321	68.3%			3.71
2011	KCR	A+	7.36	1.23	6.00	0.61	22.6%	3.8%	18.9%	.157	0.68	.184	100.0%			2.89
2011	KCR	AA	10.00	1.50	6.67	1.00	29.0%	4.3%	24.6%	.168	0.78	.207	85.5%			3.18
2011	KCR	AAA	9.53	3.71	2.57	0.53	25.7%	10.0%	15.7%	.190	1.12	.250	79.5%			3.67
2011	KCR Royals	MLB	0.00	0.00	0.00	4.50	0.0%	0.0%	0.0%	.250	1.00	.143	0.0%	325	273	11.03
2011	Average		7.13	3.11	2.30	0.94	18.6%	8.1%	10.5%	.251	1.32	.291	72.5%			4.12
2012	KCR Royals (ST)	ST	10.38	3.46	3.00	0.00	27.3%	9.1%	18.2%	.240	1.31	.343	76.5%			2.35
2012	KCR Royals	MLB	8.22	2.24	3.67	0.43	22.4%	6.1%	16.3%	.246	1.19	.313	80.9%	57	66	2.70
2012	Average		7.56	3.05	2.48	1.02	19.8%	8.0%	11.8%	.250	1.31	.293	72.5%			4.12
2013	KCR	AA	22.50	0.00	5.00	0.00	71.4%	0.0%	71.4%	.143	0.50	.500	100.0%			-1.94
2013	KCR	AAA	12.38	3.38	3.67	0.56	35.5%	9.7%	25.8%	.111	0.75	.161	95.2%			3.13
2013	KCR Royals (ST)	ST	7.36	3.68	2.00	0.00	22.2%	11.1%	11.1%	.125	0.82	.167	100.0%			3.30
2013	KCR Royals	MLB	11.42	3.24	3.52	1.39	30.2%	8.6%	21.6%	.216	1.18	.281	75.3%	96	94	3.70
2013	Average		7.57	3.02	2.51	0.96	19.9%	7.9%	11.9%	.250	1.30	.294	73.5%			4.02
2014	KCR Royals (ST)	ST	8.44	4.22	2.00	1.69	22.7%	11.4%	11.4%	.205	1.22	.222	49.0%			5.69
2014	KCR Royals	MLB	7.59	3.34	2.27	0.00	20.7%	9.1%	11.6%	.211	1.14	.274	85.5%	36	72	2.69
2014	KCR Royals	MLB	9.60	4.20	2.29	0.00	26.2%	11.5%	14.8%	.204	1.20	.289	83.3%	46	64	2.40
2014	Average		7.73	2.89	2.67	0.86	20.4%	7.6%	12.7%	.247	1.28	.295	73.0%			3.81
2015	KCR Royals (ST)	ST	7.45	1.86	4.00	0.00	20.5%	5.1%	15.4%	.189	0.93	.241	77.8%			2.55
2015	KCR Royals	MLB	8.27	3.36	2.46	0.65	22.4%	9.1%	13.3%	.202	1.12	.249	78.1%	67	87	3.44
2015	KCR Royals	MLB	14.49	1.98	7.33	0.00	40.7%	5.6%	35.2%	.196	0.95	.345	84.6%	16	14	0.57
2015	Average		7.76	2.92	2.66	1.02	20.4%	7.7%	12.7%	.251	1.29	.296	72.9%			4.03
2016	KCR Royals (ST)	ST	9.00	1.80	5.00	0.90	26.3%	5.3%	21.1%	.139	0.70	.160	53.6%			3.63
2016	KCR Royals	MLB	10.75	1.50	7.17	0.75	30.4%	4.2%	26.1%	.213	0.96	.290	77.0%	64	59	2.47
2016	Average		8.10	3.14	2.58	1.17	21.1%	8.2%	12.9%	.252	1.32	.298	72.9%			4.24
2017	KCR Royals (ST)	ST	8.10	0.90	9.00	0.90	18.4%	2.0%	16.3%	.298	1.50	.351	75.3%			3.75
2017	KCR Royals	MLB	8.49	3.03	2.80	1.37	21.6%	7.7%	13.9%	.252	1.35	.295	70.2%	95	100	4.30
2017	Average		8.34	3.29	2.53	1.27	21.6%	8.5%	13.1%	.252	1.34	.297	72.6%			4.40
2018	KCR Royals (ST)	ST	4.50	3.38	1.33	1.13	11.4%	8.6%	2.9%	.344	1.75	.370	71.4%			5.36
2018	2 Tms	MLB	7.71	2.03	3.80	1.22	20.7%	5.4%	15.2%	.249	1.20	.287	92.1%	59	96	3.95
2018	KCR Royals	MLB	7.71	0.70	11.00	0.70	23.2%	2.1%	21.1%	.204	0.82	.246	98.9%	24	65	2.69
2018	WSN Nationals	MLB	7.71	3.86	2.00	1.93	18.0%	9.0%	9.0%	.300	1.71	.333	87.6%	106	138	5.68
2018	Average		8.53	3.25	2.63	1.16	22.3%	8.5%	13.8%	.245	1.30	.293	72.8%			4.19
2019	CHW	AAA	6.00	0.00	2.00	6.00	14.3%	0.0%	14.3%	.357	1.67	.300	45.5%			10.96
2019	CHW White Sox (ST)	ST	8.22	1.17	7.00	1.17	25.9%	3.7%	22.2%	.115	0.52	.111	76.9%			3.99
2019	CHW White Sox	MLB	9.29	4.03	2.30	1.40	22.6%	9.8%	12.8%	.284	1.62	.347	65.9%	134	97	4.58
2019	Average		8.88	3.29	2.69	1.40	23.0%	8.5%	14.4%	.249	1.33	.296	72.3%			4.49
2020	CHW White Sox (ST)	ST	13.50	2.25	6.00	0.00	33.3%	5.6%	27.8%	.313	1.50	.500	57.1%			2.09
2020	CHW White Sox	MLB	11.57	3.86	3.00	7.71	27.3%	9.1%	18.2%	.300	1.71	.200	0.0%	347	284	13.05
2020	Average		9.07	3.54	2.56	1.34	23.4%	9.2%	14.3%	.242	1.33	.291	71.8%			4.46
Total	- - -	MLB	8.94	2.80	3.19	0.88	23.8%	7.5%	16.3%	.233	1.20	.290	77.5%	75	83	3.44
Postseason	- - -	MLB	11.93	3.14	3.80	0.00	33.0%	8.7%	24.3%	.200	1.08	.313	83.9%	32	40	1.53

Season	Team	Level	K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP)	BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP)	K/BB K/BB - Strikeout to Walk Ratio (SO/BB)	HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP)	K% K% - Strikeout Percentage (SO/TBF)	BB% BB% - Walk Percentage (BB/TBF)	K-BB% K-BB% - The difference between strikeout percentage and walk percentage	AVG AVG - Batting Average Against	WHIP WHIP - Walks + Hits divided by Innings Pitched	BABIP BABIP - Batting Average on Balls in Play	LOB% LOB% - Left on Base Percentage	ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better	FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better	FIP FIP - Fielder Independent Pitching on an ERA scale
2007	KCR	R	10.55	3.16	3.33	0.21	29.4%	8.8%	20.6%	.196	1.05	.284	89.9%			2.34
2008	KCR	R	7.99	0.89	9.00	0.00	22.7%	2.5%	20.2%	.253	1.05	.331	69.6%			2.48
2008	KCR	A	4.97	1.42	3.50	0.00	13.2%	3.8%	9.4%	.260	1.18	.302	75.0%			2.89
2009	KCR	A	1.80	0.00	1.00	0.00	5.9%	0.0%	5.9%	.176	0.60	.188	100.0%			3.19
2010	KCR	A	8.71	3.27	2.67	0.44	23.1%	8.7%	14.5%	.247	1.28	.321	68.3%			3.71
2011	KCR	A+	7.36	1.23	6.00	0.61	22.6%	3.8%	18.9%	.157	0.68	.184	100.0%			2.89
2011	KCR	AA	10.00	1.50	6.67	1.00	29.0%	4.3%	24.6%	.168	0.78	.207	85.5%			3.18
2011	KCR	AAA	9.53	3.71	2.57	0.53	25.7%	10.0%	15.7%	.190	1.12	.250	79.5%			3.67
2011	KCR Royals	MLB	0.00	0.00	0.00	4.50	0.0%	0.0%	0.0%	.250	1.00	.143	0.0%	325	273	11.03
2011	Average		7.13	3.11	2.30	0.94	18.6%	8.1%	10.5%	.251	1.32	.291	72.5%			4.12
2012	KCR Royals (ST)	ST	10.38	3.46	3.00	0.00	27.3%	9.1%	18.2%	.240	1.31	.343	76.5%			2.35
2012	KCR Royals	MLB	8.22	2.24	3.67	0.43	22.4%	6.1%	16.3%	.246	1.19	.313	80.9%	57	66	2.70
2012	Average		7.56	3.05	2.48	1.02	19.8%	8.0%	11.8%	.250	1.31	.293	72.5%			4.12
2013	KCR	AA	22.50	0.00	5.00	0.00	71.4%	0.0%	71.4%	.143	0.50	.500	100.0%			-1.94
2013	KCR	AAA	12.38	3.38	3.67	0.56	35.5%	9.7%	25.8%	.111	0.75	.161	95.2%			3.13
2013	KCR Royals (ST)	ST	7.36	3.68	2.00	0.00	22.2%	11.1%	11.1%	.125	0.82	.167	100.0%			3.30
2013	KCR Royals	MLB	11.42	3.24	3.52	1.39	30.2%	8.6%	21.6%	.216	1.18	.281	75.3%	96	94	3.70
2013	Average		7.57	3.02	2.51	0.96	19.9%	7.9%	11.9%	.250	1.30	.294	73.5%			4.02
2014	KCR Royals (ST)	ST	8.44	4.22	2.00	1.69	22.7%	11.4%	11.4%	.205	1.22	.222	49.0%			5.69
2014	KCR Royals	MLB	7.59	3.34	2.27	0.00	20.7%	9.1%	11.6%	.211	1.14	.274	85.5%	36	72	2.69
2014	KCR Royals	MLB	9.60	4.20	2.29	0.00	26.2%	11.5%	14.8%	.204	1.20	.289	83.3%	46	64	2.40
2014	Average		7.73	2.89	2.67	0.86	20.4%	7.6%	12.7%	.247	1.28	.295	73.0%			3.81
2015	KCR Royals (ST)	ST	7.45	1.86	4.00	0.00	20.5%	5.1%	15.4%	.189	0.93	.241	77.8%			2.55
2015	KCR Royals	MLB	8.27	3.36	2.46	0.65	22.4%	9.1%	13.3%	.202	1.12	.249	78.1%	67	87	3.44
2015	KCR Royals	MLB	14.49	1.98	7.33	0.00	40.7%	5.6%	35.2%	.196	0.95	.345	84.6%	16	14	0.57
2015	Average		7.76	2.92	2.66	1.02	20.4%	7.7%	12.7%	.251	1.29	.296	72.9%			4.03
2016	KCR Royals (ST)	ST	9.00	1.80	5.00	0.90	26.3%	5.3%	21.1%	.139	0.70	.160	53.6%			3.63
2016	KCR Royals	MLB	10.75	1.50	7.17	0.75	30.4%	4.2%	26.1%	.213	0.96	.290	77.0%	64	59	2.47
2016	Average		8.10	3.14	2.58	1.17	21.1%	8.2%	12.9%	.252	1.32	.298	72.9%			4.24
2017	KCR Royals (ST)	ST	8.10	0.90	9.00	0.90	18.4%	2.0%	16.3%	.298	1.50	.351	75.3%			3.75
2017	KCR Royals	MLB	8.49	3.03	2.80	1.37	21.6%	7.7%	13.9%	.252	1.35	.295	70.2%	95	100	4.30
2017	Average		8.34	3.29	2.53	1.27	21.6%	8.5%	13.1%	.252	1.34	.297	72.6%			4.40
2018	KCR Royals (ST)	ST	4.50	3.38	1.33	1.13	11.4%	8.6%	2.9%	.344	1.75	.370	71.4%			5.36
2018	2 Tms	MLB	7.71	2.03	3.80	1.22	20.7%	5.4%	15.2%	.249	1.20	.287	92.1%	59	96	3.95
2018	KCR Royals	MLB	7.71	0.70	11.00	0.70	23.2%	2.1%	21.1%	.204	0.82	.246	98.9%	24	65	2.69
2018	WSN Nationals	MLB	7.71	3.86	2.00	1.93	18.0%	9.0%	9.0%	.300	1.71	.333	87.6%	106	138	5.68
2018	Average		8.53	3.25	2.63	1.16	22.3%	8.5%	13.8%	.245	1.30	.293	72.8%			4.19
2019	CHW	AAA	6.00	0.00	2.00	6.00	14.3%	0.0%	14.3%	.357	1.67	.300	45.5%			10.96
2019	CHW White Sox (ST)	ST	8.22	1.17	7.00	1.17	25.9%	3.7%	22.2%	.115	0.52	.111	76.9%			3.99
2019	CHW White Sox	MLB	9.29	4.03	2.30	1.40	22.6%	9.8%	12.8%	.284	1.62	.347	65.9%	134	97	4.58
2019	Average		8.88	3.29	2.69	1.40	23.0%	8.5%	14.4%	.249	1.33	.296	72.3%			4.49
2020	CHW White Sox (ST)	ST	13.50	2.25	6.00	0.00	33.3%	5.6%	27.8%	.313	1.50	.500	57.1%			2.09
2020	CHW White Sox	MLB	11.57	3.86	3.00	7.71	27.3%	9.1%	18.2%	.300	1.71	.200	0.0%	347	284	13.05
2020	Average		9.07	3.54	2.56	1.34	23.4%	9.2%	14.3%	.242	1.33	.291	71.8%			4.46
Total	- - -	MLB	8.94	2.80	3.19	0.88	23.8%	7.5%	16.3%	.233	1.20	.290	77.5%	75	83	3.44
Postseason	- - -	MLB	11.93	3.14	3.80	0.00	33.0%	8.7%	24.3%	.200	1.08	.313	83.9%	32	40	1.53

Partial SeasonsPostseasonMinor LeaguesSpring TrainingRegular MLB Seasons

Season	Team	Level	Events Events - The number of Batted Balls (TBF - SO - BB - HBP)	EV EV - Exit Velocity (mph) - Speed of the baseball as it comes off the bat	maxEV maxEV - Maximum Exit Velocity (mph) - Highest speed of a ball off the bat.	LA LA - Launch Angle (degree) - Vertical direction of the ball as it leaves the bat	Barrels Barrels - A batted ball with comparable hit types (in terms of exit velocity and launch angle) have led to a minimum .500 batting average and 1.500 slugging percentage	Barrel% Barrel% - Percentage of batted balls that are classified as barrels	HardHit HardHit - Number of batted balls with exit velocity of 95 mph or higher	HardHit% HardHit% - Percentage of batted balls with exit velocity of 95 mph or higher	ERA ERA - Earned Run Average ((ER*9)/IP)	xERA xERA - Expected ERA
2015	KCR Royals	MLB	194	86.9	110.2	10.4	7	3.6%	58	29.9%	2.71	3.61
2016	KCR Royals	MLB	182	88.6	112.5	12.4	9	4.9%	61	33.5%	2.75	2.61
2017	KCR Royals	MLB	182	88.0	110.4	8.9	14	7.7%	70	38.5%	4.25	4.27
2018	2 Tms	MLB	135	87.7	110.8	17.6	7	5.2%	49	36.3%	2.44	3.79
2018	KCR Royals	MLB	71	88.6	110.8	16.2	4	5.6%	26	36.6%	1.05
2018	WSN Nationals	MLB	64	86.6	109.3	19.1	3	4.7%	23	35.9%	4.34
2019	CHW White Sox	MLB	158	86.7	112.4	18.1	13	8.2%	50	31.6%	6.14	4.54
2020	CHW White Sox	MLB	7	91.6	108.3	28.6	1	14.3%	3	42.9%	15.43	7.08
Total	- - -	MLB	858	87.6	112.5	13.2	51	5.9%	291	33.9%	3.21

Season	Team	Level	Events Events - The number of Batted Balls (TBF - SO - BB - HBP)	EV EV - Exit Velocity (mph) - Speed of the baseball as it comes off the bat	maxEV maxEV - Maximum Exit Velocity (mph) - Highest speed of a ball off the bat.	LA LA - Launch Angle (degree) - Vertical direction of the ball as it leaves the bat	Barrels Barrels - A batted ball with comparable hit types (in terms of exit velocity and launch angle) have led to a minimum .500 batting average and 1.500 slugging percentage	Barrel% Barrel% - Percentage of batted balls that are classified as barrels	HardHit HardHit - Number of batted balls with exit velocity of 95 mph or higher	HardHit% HardHit% - Percentage of batted balls with exit velocity of 95 mph or higher	ERA ERA - Earned Run Average ((ER*9)/IP)	xERA xERA - Expected ERA
2015	KCR Royals	MLB	194	86.9	110.2	10.4	7	3.6%	58	29.9%	2.71	3.61
2016	KCR Royals	MLB	182	88.6	112.5	12.4	9	4.9%	61	33.5%	2.75	2.61
2017	KCR Royals	MLB	182	88.0	110.4	8.9	14	7.7%	70	38.5%	4.25	4.27
2018	2 Tms	MLB	135	87.7	110.8	17.6	7	5.2%	49	36.3%	2.44	3.79
2018	KCR Royals	MLB	71	88.6	110.8	16.2	4	5.6%	26	36.6%	1.05
2018	WSN Nationals	MLB	64	86.6	109.3	19.1	3	4.7%	23	35.9%	4.34
2019	CHW White Sox	MLB	158	86.7	112.4	18.1	13	8.2%	50	31.6%	6.14	4.54
2020	CHW White Sox	MLB	7	91.6	108.3	28.6	1	14.3%	3	42.9%	15.43	7.08
Total	- - -	MLB	858	87.6	112.5	13.2	51	5.9%	291	33.9%	3.21

Kelvin Herrera

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BAL	CHW	LAA
BOS	CLE	OAK
NYY	DET	SEA
TBR	KCR	TEX
TOR	MIN	HOU

ATL	CHC	ARI
MIA	CIN	COL
WSN	MIL	LAD
NYM	PIT	SDP
PHI	STL	SFG