Jonathan Heasley

Tampa Bay Rays

Age: 29

Bats/Throws: R/R

6'3" / 225

DOB: 1/27/1997

(29 years, 4 months, 12 days)

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Stats

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular Season

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
2018	KCR	R	21	1	3	0	12	11	50.2	6.22	2.84	0.71	.298	51.2%	51.5%	7.8%		5.15		4.99	5.26
2019	KCR	A	22	8	5	0	25	20	112.2	9.59	2.72	0.88	.279	73.6%	44.7%	10.3%		3.12		3.75	3.41
2021	KCR	AA	24	7	3	0	22	21	105.1	10.25	2.91	1.54	.303	84.8%	38.9%	16.2%		3.33		4.59	4.24
2021	KCR	ST	24	0	0	0	3	0	4.0	11.25	2.25	0.00	.125	100.0%	50.0%	0.0%		0.00		1.83	3.31
2021	KCR	MLB	24	1	1	0	3	3	14.2	3.68	1.84	1.84	.267	75.9%	45.8%	15.8%	93.6	4.91	7.16	6.03	5.66	0.0
2022	KCR	AAA	25	1	2	0	9	9	39.1	10.30	2.29	1.60	.286	65.3%	42.2%	18.4%		4.35		4.30	3.58
2022	KCR	ST	25	0	1	0	4	2	8.0	5.63	7.88	3.38	.346	60.8%	37.9%	27.3%		11.25		9.91	7.93
2022	KCR	MLB	25	4	10	0	21	21	104.0	6.06	4.07	1.64	.276	69.9%	37.2%	12.3%	93.3	5.28	5.30	5.67	5.49	-0.4
2023	KCR	AAA	26	2	5	1	32	15	94.2	8.37	4.28	1.90	.321	65.4%	37.7%	16.7%		6.85	6.10	5.95	5.64
2023	KCR	ST	26	0	1	0	4	2	9.1	6.75	2.89	4.82	.450	42.1%	40.0%	33.3%		17.36		10.24	6.13
2023	KCR	MLB	26	0	0	0	12	0	15.0	5.40	1.20	3.00	.261	53.8%	25.5%	22.7%	95.0	7.20	8.54	6.99	5.08	-0.3
2024	BAL	AAA	27	0	1	0	10	3	30.2	7.92	2.35	0.88	.306	85.8%	40.9%	9.7%		2.64	4.35	3.96	4.50
2024	BAL	ST	27	0	0	1	8	0	8.2	4.15	2.08	2.08	.300	88.2%	41.9%	16.7%		4.15		6.51	5.87
2024	BAL	MLB	27	0	1	0	4	0	5.1	6.75	5.06	3.38	.421	26.8%	66.7%	50.0%	93.5	16.88	8.56	8.79	5.05	-0.2
2025	KCR	AA	28	1	0	0	8	0	12.2	6.39	1.42	2.13	.297	85.9%	40.0%	18.8%		4.26		5.82	4.33
2025	KCR	AAA	28	0	0	0	4	0	4.0	4.50	0.00	2.25	.421	39.5%	40.0%	16.7%		13.50	3.78	5.75	5.06
2025	KCR	MiLB	28	1	0	0	12	0	16.2	5.94	1.08	2.16	.339	68.6%	40.0%	18.2%		6.48	3.78	5.80	4.51
2025	CHW	ST	28	1	0	0	3	0	4.0	6.75	4.50	0.00	.200	100.0%	30.0%	0.0%		0.00		3.73	5.06
2026	KCR	ST	29	0	1	0	3	0	2.0	9.00	4.50	9.00	.600	48.4%	50.0%	66.7%		27.00		16.15	5.96
2026	Steamer	PROJ	29	0	0	0	1	0	1.0	6.62	2.92	1.45	.299	70.5%	38.6%			4.86		4.86	4.80	0.0
2026	ZiPS	PROJ	29	3	4	0	23	11	73.0	6.29	3.21	1.36	.288	67.4%				5.05		4.89		0.2
2026	OOPSY	PROJ	29	0	0	0	1	1	2.2	6.37	3.11	1.47	.290	68.4%				5.04		5.02		0.0
2026	TBR	AAA	29	3	2	0	7	4	27.2	5.86	1.95	0.98	.279	71.4%	46.6%	11.1%		3.90	4.48	4.49	4.87
2026	TBR	MLB	29	0	0	0	1	0	4.0	4.50	0.00	4.50	.400	57.7%	29.4%	25.0%	91.6	11.25	11.34	8.61	4.98	-0.1
2026	Steamer	ROS	29	0	0	0	1	0	1.0	6.60	2.77	1.42	.294	71.0%				4.68		4.75		0.0
2026	ZiPS	ROS	29	1	2		11	5	37.0	6.39	2.98	1.56	.297	65.5%				5.44		5.06		0.0
2026	OOPSY	ROS	29	0	0	0	1	1	2.9	6.01	2.57	1.42	.285	67.6%				4.84		4.85		0.0
Total	- - -	MLB		5	12	0	41	24	143.0	5.73	3.46	1.95	.283	66.3%	37.9%	15.0%	93.5	6.04	5.99	6.04	5.43	-1.1

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
2018	KCR	R	21	1	3	0	12	11	50.2	6.22	2.84	0.71	.298	51.2%	51.5%	7.8%		5.15		4.99	5.26
2019	KCR	A	22	8	5	0	25	20	112.2	9.59	2.72	0.88	.279	73.6%	44.7%	10.3%		3.12		3.75	3.41
2021	KCR	AA	24	7	3	0	22	21	105.1	10.25	2.91	1.54	.303	84.8%	38.9%	16.2%		3.33		4.59	4.24
2021	KCR	ST	24	0	0	0	3	0	4.0	11.25	2.25	0.00	.125	100.0%	50.0%	0.0%		0.00		1.83	3.31
2021	KCR	MLB	24	1	1	0	3	3	14.2	3.68	1.84	1.84	.267	75.9%	45.8%	15.8%	93.6	4.91	7.16	6.03	5.66	0.0
2022	KCR	AAA	25	1	2	0	9	9	39.1	10.30	2.29	1.60	.286	65.3%	42.2%	18.4%		4.35		4.30	3.58
2022	KCR	ST	25	0	1	0	4	2	8.0	5.63	7.88	3.38	.346	60.8%	37.9%	27.3%		11.25		9.91	7.93
2022	KCR	MLB	25	4	10	0	21	21	104.0	6.06	4.07	1.64	.276	69.9%	37.2%	12.3%	93.3	5.28	5.30	5.67	5.49	-0.4
2023	KCR	AAA	26	2	5	1	32	15	94.2	8.37	4.28	1.90	.321	65.4%	37.7%	16.7%		6.85	6.10	5.95	5.64
2023	KCR	ST	26	0	1	0	4	2	9.1	6.75	2.89	4.82	.450	42.1%	40.0%	33.3%		17.36		10.24	6.13
2023	KCR	MLB	26	0	0	0	12	0	15.0	5.40	1.20	3.00	.261	53.8%	25.5%	22.7%	95.0	7.20	8.54	6.99	5.08	-0.3
2024	BAL	AAA	27	0	1	0	10	3	30.2	7.92	2.35	0.88	.306	85.8%	40.9%	9.7%		2.64	4.35	3.96	4.50
2024	BAL	ST	27	0	0	1	8	0	8.2	4.15	2.08	2.08	.300	88.2%	41.9%	16.7%		4.15		6.51	5.87
2024	BAL	MLB	27	0	1	0	4	0	5.1	6.75	5.06	3.38	.421	26.8%	66.7%	50.0%	93.5	16.88	8.56	8.79	5.05	-0.2
2025	KCR	AA	28	1	0	0	8	0	12.2	6.39	1.42	2.13	.297	85.9%	40.0%	18.8%		4.26		5.82	4.33
2025	KCR	AAA	28	0	0	0	4	0	4.0	4.50	0.00	2.25	.421	39.5%	40.0%	16.7%		13.50	3.78	5.75	5.06
2025	KCR	MiLB	28	1	0	0	12	0	16.2	5.94	1.08	2.16	.339	68.6%	40.0%	18.2%		6.48	3.78	5.80	4.51
2025	CHW	ST	28	1	0	0	3	0	4.0	6.75	4.50	0.00	.200	100.0%	30.0%	0.0%		0.00		3.73	5.06
2026	KCR	ST	29	0	1	0	3	0	2.0	9.00	4.50	9.00	.600	48.4%	50.0%	66.7%		27.00		16.15	5.96
2026	Steamer	PROJ	29	0	0	0	1	0	1.0	6.62	2.92	1.45	.299	70.5%	38.6%			4.86		4.86	4.80	0.0
2026	ZiPS	PROJ	29	3	4	0	23	11	73.0	6.29	3.21	1.36	.288	67.4%				5.05		4.89		0.2
2026	OOPSY	PROJ	29	0	0	0	1	1	2.2	6.37	3.11	1.47	.290	68.4%				5.04		5.02		0.0
2026	TBR	AAA	29	3	2	0	7	4	27.2	5.86	1.95	0.98	.279	71.4%	46.6%	11.1%		3.90	4.48	4.49	4.87
2026	TBR	MLB	29	0	0	0	1	0	4.0	4.50	0.00	4.50	.400	57.7%	29.4%	25.0%	91.6	11.25	11.34	8.61	4.98	-0.1
2026	Steamer	ROS	29	0	0	0	1	0	1.0	6.60	2.77	1.42	.294	71.0%				4.68		4.75		0.0
2026	ZiPS	ROS	29	1	2		11	5	37.0	6.39	2.98	1.56	.297	65.5%				5.44		5.06		0.0
2026	OOPSY	ROS	29	0	0	0	1	1	2.9	6.01	2.57	1.42	.285	67.6%				4.84		4.85		0.0
Total	- - -	MLB		5	12	0	41	24	143.0	5.73	3.46	1.95	.283	66.3%	37.9%	15.0%	93.5	6.04	5.99	6.04	5.43	-1.1

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular Season

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 QS - Quality Starts; pitched at least 6 innings and gave up 3 or fewer earned runs	CG CG - Complete Games	ShO ShO - Shoutouts	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
2018	KCR	R	1	3	5.15	12	11		0	0	0	0	0	50.2	227	55	38	29	4	16	0	1	4	0	35
2019	KCR	A	8	5	3.12	25	20		0	0	0	0	1	112.2	467	93	47	39	11	34	0	8	10	0	120
2021	KCR	AA	7	3	3.33	22	21		1	1	0	0	1	105.1	433	95	42	39	18	34	0	7	4	0	120
2021	KCR	ST	0	0	0.00	3	0		0	0	0	0	0	4.0	14	1	0	0	0	1	0	0	0	0	5
2021	KCR	MLB	1	1	4.91	3	3	0	0	0	0	0	0	14.2	59	15	8	8	3	3	0	2	0	0	6
2022	KCR	AAA	1	2	4.35	9	9		0	0	0	0	0	39.1	160	35	22	19	7	10	0	0	3	0	45
2022	KCR	ST	0	1	11.25	4	2		0	0	0	0	1	8.0	41	12	10	10	3	7	0	0	0	0	5
2022	KCR	MLB	4	10	5.28	21	21	7	0	0	0	0	0	104.0	465	108	67	61	19	47	0	6	9	0	70
2023	KCR	AAA	2	5	6.85	32	15		0	0	1	1	0	94.2	429	108	72	72	20	45	0	2	4	0	88
2023	KCR	ST	0	1	17.36	4	2		0	0	0	1	1	9.1	55	23	18	18	5	3	0	0	1	0	7
2023	KCR	MLB	0	0	7.20	12	0	0	0	0	0	1	1	15.0	63	17	13	12	5	2	0	1	1	0	9
2024	BAL	AAA	0	1	2.64	10	3		0	0	0	1	0	30.2	124	29	9	9	3	8	0	1	0	0	27
2024	BAL	ST	0	0	4.15	8	0		0	0	1	1	1	8.2	38	11	4	4	2	2	0	0	0	0	4
2024	BAL	MLB	0	1	16.88	4	0	0	0	0	0	0	0	5.1	29	10	11	10	2	3	0	1	1	0	4
2025	KCR	AA	1	0	4.26	8	0		0	0	0	2	1	12.2	52	14	6	6	3	2	0	1	1	0	9
2025	KCR	AAA	0	0	13.50	4	0		0	0	0	0	0	4.0	22	9	6	6	1	0	0	0	1	0	2
2025	KCR	MiLB	1	0	6.48	12	0		0	0	0	2	1	16.2	74	23	12	12	4	2	0	1	2	0	11
2025	CHW	ST	1	0	0.00	3	0		0	0	0	1	0	4.0	15	2	0	0	0	2	0	0	1	0	3
2026	KCR	ST	0	1	27.00	3	0		0	0	0	0	1	2.0	15	8	6	6	2	1	0	0	0	0	2
2026	Steamer	PROJ	0	0	4.86	1	0	0	0	0	0	0		1.0	4	1	1	1	0	0	0	0			1
2026	ZiPS	PROJ	3	4	5.05	23	11				0	0		73.0	320	77	44	41	11	26	0	3	5	0	51
2026	OOPSY	PROJ	0	0	5.04	1	1	0			0	0		2.2	10	2	1	1	0	1	0	0			2
2026	TBR	AAA	3	2	3.90	7	4		1	1	0	1	0	27.2	115	27	13	12	3	6	0	2	0	0	18
2026	TBR	MLB	0	0	11.25	1	0	0	0	0	0	0	0	4.0	19	8	5	5	2	0	0	0	0	0	2
2026	Steamer	ROS	0	0	4.68	1	0	0	0	0	0	0		1.0	4	1	1	1	0	0		0			1
2026	ZiPS	ROS	1	2	5.44	11	5							37.0	161	41	24	22	6	12		1			26
2026	OOPSY	ROS	0	0	4.84	1	1	0			0	0		2.9	13	3	2	2	0	1	0	0			2
Total	- - -	MLB	5	12	6.04	41	24	7	0	0	0	1	1	143.0	635	158	104	96	31	55	0	10	11	0	91

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 QS - Quality Starts; pitched at least 6 innings and gave up 3 or fewer earned runs	CG CG - Complete Games	ShO ShO - Shoutouts	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
2018	KCR	R	1	3	5.15	12	11		0	0	0	0	0	50.2	227	55	38	29	4	16	0	1	4	0	35
2019	KCR	A	8	5	3.12	25	20		0	0	0	0	1	112.2	467	93	47	39	11	34	0	8	10	0	120
2021	KCR	AA	7	3	3.33	22	21		1	1	0	0	1	105.1	433	95	42	39	18	34	0	7	4	0	120
2021	KCR	ST	0	0	0.00	3	0		0	0	0	0	0	4.0	14	1	0	0	0	1	0	0	0	0	5
2021	KCR	MLB	1	1	4.91	3	3	0	0	0	0	0	0	14.2	59	15	8	8	3	3	0	2	0	0	6
2022	KCR	AAA	1	2	4.35	9	9		0	0	0	0	0	39.1	160	35	22	19	7	10	0	0	3	0	45
2022	KCR	ST	0	1	11.25	4	2		0	0	0	0	1	8.0	41	12	10	10	3	7	0	0	0	0	5
2022	KCR	MLB	4	10	5.28	21	21	7	0	0	0	0	0	104.0	465	108	67	61	19	47	0	6	9	0	70
2023	KCR	AAA	2	5	6.85	32	15		0	0	1	1	0	94.2	429	108	72	72	20	45	0	2	4	0	88
2023	KCR	ST	0	1	17.36	4	2		0	0	0	1	1	9.1	55	23	18	18	5	3	0	0	1	0	7
2023	KCR	MLB	0	0	7.20	12	0	0	0	0	0	1	1	15.0	63	17	13	12	5	2	0	1	1	0	9
2024	BAL	AAA	0	1	2.64	10	3		0	0	0	1	0	30.2	124	29	9	9	3	8	0	1	0	0	27
2024	BAL	ST	0	0	4.15	8	0		0	0	1	1	1	8.2	38	11	4	4	2	2	0	0	0	0	4
2024	BAL	MLB	0	1	16.88	4	0	0	0	0	0	0	0	5.1	29	10	11	10	2	3	0	1	1	0	4
2025	KCR	AA	1	0	4.26	8	0		0	0	0	2	1	12.2	52	14	6	6	3	2	0	1	1	0	9
2025	KCR	AAA	0	0	13.50	4	0		0	0	0	0	0	4.0	22	9	6	6	1	0	0	0	1	0	2
2025	KCR	MiLB	1	0	6.48	12	0		0	0	0	2	1	16.2	74	23	12	12	4	2	0	1	2	0	11
2025	CHW	ST	1	0	0.00	3	0		0	0	0	1	0	4.0	15	2	0	0	0	2	0	0	1	0	3
2026	KCR	ST	0	1	27.00	3	0		0	0	0	0	1	2.0	15	8	6	6	2	1	0	0	0	0	2
2026	Steamer	PROJ	0	0	4.86	1	0	0	0	0	0	0		1.0	4	1	1	1	0	0	0	0			1
2026	ZiPS	PROJ	3	4	5.05	23	11				0	0		73.0	320	77	44	41	11	26	0	3	5	0	51
2026	OOPSY	PROJ	0	0	5.04	1	1	0			0	0		2.2	10	2	1	1	0	1	0	0			2
2026	TBR	AAA	3	2	3.90	7	4		1	1	0	1	0	27.2	115	27	13	12	3	6	0	2	0	0	18
2026	TBR	MLB	0	0	11.25	1	0	0	0	0	0	0	0	4.0	19	8	5	5	2	0	0	0	0	0	2
2026	Steamer	ROS	0	0	4.68	1	0	0	0	0	0	0		1.0	4	1	1	1	0	0		0			1
2026	ZiPS	ROS	1	2	5.44	11	5							37.0	161	41	24	22	6	12		1			26
2026	OOPSY	ROS	0	0	4.84	1	1	0			0	0		2.9	13	3	2	2	0	1	0	0			2
Total	- - -	MLB	5	12	6.04	41	24	7	0	0	0	1	1	143.0	635	158	104	96	31	55	0	10	11	0	91

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular SeasonAverages

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
2018	KCR	R	6.22	2.84	2.19	0.71	15.4%	7.0%	8.4%	.262	1.40	.298	51.2%	100	101	4.99
2019	KCR	A	9.59	2.72	3.53	0.88	25.7%	7.3%	18.4%	.219	1.13	.279	73.6%	82	97	3.75
2021	KCR	AA	10.25	2.91	3.53	1.54	27.7%	7.9%	19.9%	.242	1.22	.303	84.8%	72	101	4.59
2021	KCR	ST	11.25	2.25	5.00	0.00	35.7%	7.1%	28.6%	.077	0.50	.125	100.0%	0	38	1.83
2021	KCR	MLB	3.68	1.84	2.00	1.84	10.2%	5.1%	5.1%	.278	1.23	.267	75.9%	109	141	6.03
2021			8.90	3.34	2.67	1.26	23.2%	8.7%	14.5%	.241	1.30	.290	72.1%			4.30
2022	KCR	AAA	10.30	2.29	4.50	1.60	28.1%	6.3%	21.9%	.233	1.14	.286	65.3%	91	90	4.30
2022	KCR	ST	5.63	7.88	0.71	3.38	12.2%	17.1%	-4.9%	.353	2.38	.346	60.8%	228	196	9.91
2022	KCR	MLB	6.06	4.07	1.49	1.64	15.1%	10.1%	4.9%	.262	1.49	.276	69.9%	130	144	5.67
2022			8.53	3.10	2.75	1.09	22.4%	8.2%	14.3%	.240	1.27	.289	72.6%			4.06
2023	KCR	AAA	8.37	4.28	1.96	1.90	20.5%	10.5%	10.0%	.283	1.62	.321	65.4%	128	111	5.95
2023	KCR	ST	6.75	2.89	2.33	4.82	12.7%	5.5%	7.3%	.442	2.79	.450	42.1%	377	213	10.24
2023	KCR	MLB	5.40	1.20	4.50	3.00	14.3%	3.2%	11.1%	.283	1.27	.261	53.8%	163	164	6.99
2023			8.74	3.30	2.65	1.23	22.7%	8.6%	14.1%	.246	1.31	.295	71.9%			4.28
2024	BAL	AAA	7.92	2.35	3.38	0.88	21.8%	6.5%	15.3%	.252	1.21	.306	85.8%	56	84	3.96
2024	BAL	ST	4.15	2.08	2.00	2.08	10.5%	5.3%	5.3%	.306	1.50	.300	88.2%	87	133	6.51
2024	BAL	MLB	6.75	5.06	1.33	3.38	13.8%	10.3%	3.4%	.400	2.44	.421	26.8%	426	218	8.79
2024			8.60	3.12	2.76	1.14	22.6%	8.2%	14.4%	.241	1.27	.289	72.1%			4.11
2025	KCR	AA	6.39	1.42	4.50	2.13	17.3%	3.8%	13.5%	.286	1.26	.297	85.9%	100	137	5.82
2025	KCR	AAA	4.50	0.00	2.00	2.25	9.1%	0.0%	9.1%	.409	2.25	.421	39.5%	280	119	5.75
2025	KCR	MiLB	5.94	1.08	5.50	2.16	14.9%	2.7%	12.2%	.324	1.50	.339	68.6%	143	133	5.80
2025	CHW	ST	6.75	4.50	1.50	0.00	20.0%	13.3%	6.7%	.154	1.00	.200	100.0%	0	73	3.73
2026	KCR	ST	9.00	4.50	2.00	9.00	13.3%	6.7%	6.7%	.571	4.50	.600	48.4%	571	328	16.15
2026	Steamer	PROJ	6.62	2.92	2.26	1.45	16.8%	7.4%	9.4%	.272	1.41	.299	70.5%			4.86
2026	ZiPS	PROJ	6.29	3.21	1.96	1.36	15.9%	8.1%	7.8%	.265	1.41	.288	67.4%			4.89
2026	OOPSY	PROJ	6.37	3.11	2.05	1.47	15.8%	7.7%	8.1%	.268	1.44	.290	68.4%			5.02
2026	TBR	AAA	5.86	1.95	3.00	0.98	15.7%	5.2%	10.4%	.252	1.19	.279	71.4%	79	92	4.49
2026	TBR	MLB	4.50	0.00	2.00	4.50	10.5%	0.0%	10.5%	.421	2.00	.400	57.7%	268	203	8.61
2026			8.46	3.52	2.40	1.11	22.0%	9.2%	12.9%	.238	1.30	.286	72.2%			4.24
2026	Steamer	ROS	6.60	2.77	2.38	1.42	16.9%	7.1%	9.8%	.268	1.38	.294	71.0%			4.75
2026	ZiPS	ROS	6.39	2.98	2.14	1.56	16.1%	7.5%	8.6%	.275	1.44	.297	65.5%			5.06
2026	OOPSY	ROS	6.01	2.57	2.33	1.42	15.4%	6.6%	8.8%	.266	1.35	.285	67.6%			4.85
Total	- - -	MLB	5.73	3.46	1.65	1.95	14.3%	8.7%	5.7%	.277	1.49	.283	66.3%	146	150	6.04

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
2018	KCR	R	6.22	2.84	2.19	0.71	15.4%	7.0%	8.4%	.262	1.40	.298	51.2%	100	101	4.99
2019	KCR	A	9.59	2.72	3.53	0.88	25.7%	7.3%	18.4%	.219	1.13	.279	73.6%	82	97	3.75
2021	KCR	AA	10.25	2.91	3.53	1.54	27.7%	7.9%	19.9%	.242	1.22	.303	84.8%	72	101	4.59
2021	KCR	ST	11.25	2.25	5.00	0.00	35.7%	7.1%	28.6%	.077	0.50	.125	100.0%	0	38	1.83
2021	KCR	MLB	3.68	1.84	2.00	1.84	10.2%	5.1%	5.1%	.278	1.23	.267	75.9%	109	141	6.03
2021			8.90	3.34	2.67	1.26	23.2%	8.7%	14.5%	.241	1.30	.290	72.1%			4.30
2022	KCR	AAA	10.30	2.29	4.50	1.60	28.1%	6.3%	21.9%	.233	1.14	.286	65.3%	91	90	4.30
2022	KCR	ST	5.63	7.88	0.71	3.38	12.2%	17.1%	-4.9%	.353	2.38	.346	60.8%	228	196	9.91
2022	KCR	MLB	6.06	4.07	1.49	1.64	15.1%	10.1%	4.9%	.262	1.49	.276	69.9%	130	144	5.67
2022			8.53	3.10	2.75	1.09	22.4%	8.2%	14.3%	.240	1.27	.289	72.6%			4.06
2023	KCR	AAA	8.37	4.28	1.96	1.90	20.5%	10.5%	10.0%	.283	1.62	.321	65.4%	128	111	5.95
2023	KCR	ST	6.75	2.89	2.33	4.82	12.7%	5.5%	7.3%	.442	2.79	.450	42.1%	377	213	10.24
2023	KCR	MLB	5.40	1.20	4.50	3.00	14.3%	3.2%	11.1%	.283	1.27	.261	53.8%	163	164	6.99
2023			8.74	3.30	2.65	1.23	22.7%	8.6%	14.1%	.246	1.31	.295	71.9%			4.28
2024	BAL	AAA	7.92	2.35	3.38	0.88	21.8%	6.5%	15.3%	.252	1.21	.306	85.8%	56	84	3.96
2024	BAL	ST	4.15	2.08	2.00	2.08	10.5%	5.3%	5.3%	.306	1.50	.300	88.2%	87	133	6.51
2024	BAL	MLB	6.75	5.06	1.33	3.38	13.8%	10.3%	3.4%	.400	2.44	.421	26.8%	426	218	8.79
2024			8.60	3.12	2.76	1.14	22.6%	8.2%	14.4%	.241	1.27	.289	72.1%			4.11
2025	KCR	AA	6.39	1.42	4.50	2.13	17.3%	3.8%	13.5%	.286	1.26	.297	85.9%	100	137	5.82
2025	KCR	AAA	4.50	0.00	2.00	2.25	9.1%	0.0%	9.1%	.409	2.25	.421	39.5%	280	119	5.75
2025	KCR	MiLB	5.94	1.08	5.50	2.16	14.9%	2.7%	12.2%	.324	1.50	.339	68.6%	143	133	5.80
2025	CHW	ST	6.75	4.50	1.50	0.00	20.0%	13.3%	6.7%	.154	1.00	.200	100.0%	0	73	3.73
2026	KCR	ST	9.00	4.50	2.00	9.00	13.3%	6.7%	6.7%	.571	4.50	.600	48.4%	571	328	16.15
2026	Steamer	PROJ	6.62	2.92	2.26	1.45	16.8%	7.4%	9.4%	.272	1.41	.299	70.5%			4.86
2026	ZiPS	PROJ	6.29	3.21	1.96	1.36	15.9%	8.1%	7.8%	.265	1.41	.288	67.4%			4.89
2026	OOPSY	PROJ	6.37	3.11	2.05	1.47	15.8%	7.7%	8.1%	.268	1.44	.290	68.4%			5.02
2026	TBR	AAA	5.86	1.95	3.00	0.98	15.7%	5.2%	10.4%	.252	1.19	.279	71.4%	79	92	4.49
2026	TBR	MLB	4.50	0.00	2.00	4.50	10.5%	0.0%	10.5%	.421	2.00	.400	57.7%	268	203	8.61
2026			8.46	3.52	2.40	1.11	22.0%	9.2%	12.9%	.238	1.30	.286	72.2%			4.24
2026	Steamer	ROS	6.60	2.77	2.38	1.42	16.9%	7.1%	9.8%	.268	1.38	.294	71.0%			4.75
2026	ZiPS	ROS	6.39	2.98	2.14	1.56	16.1%	7.5%	8.6%	.275	1.44	.297	65.5%			5.06
2026	OOPSY	ROS	6.01	2.57	2.33	1.42	15.4%	6.6%	8.8%	.266	1.35	.285	67.6%			4.85
Total	- - -	MLB	5.73	3.46	1.65	1.95	14.3%	8.7%	5.7%	.277	1.49	.283	66.3%	146	150	6.04

Preseason ProjectionsIn-Season ProjectionsMinor LeaguesSpring TrainingMLB Regular Season

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
2021	KCR	MLB	48	92.2	110.9	15.8	6	12.5%	27	56.3%	4.91	7.16
2022	KCR	MLB	342	90.2	112.5	14.9	32	9.4%	155	45.3%	5.28	5.30
2023	KCR	AAA	294	89.2	109.5	14.1	29	9.9%	120	40.8%	6.85	6.10
2023	KCR	MLB	51	89.7	110.1	18.3	6	11.8%	19	37.3%	7.20	8.54
2024	BAL	AAA	88	86.5	106.8	13.1	4	4.5%	34	38.6%	2.64	4.35
2024	BAL	MLB	21	92.2	108.0	4.9	2	9.5%	12	57.1%	16.88	8.56
2025	KCR	AAA	20	87.8	109.1	9.1	0	0.0%	5	25.0%	13.50	3.78
2026	KCR	ST	12	94.1	109.3	8.6	0	0.0%	6	50.0%	27.00
2026	TBR	AAA	89	88.4	111.5	9.5	8	9.0%	27	30.3%	3.90	4.48
2026	TBR	MLB	17	95.1	109.9	16.8	2	11.8%	10	58.8%	11.25	11.34
Total	- - -	MLB	479	90.6	112.5	15.0	48	10.0%	223	46.6%	6.04	5.99

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
2021	KCR	MLB	48	92.2	110.9	15.8	6	12.5%	27	56.3%	4.91	7.16
2022	KCR	MLB	342	90.2	112.5	14.9	32	9.4%	155	45.3%	5.28	5.30
2023	KCR	AAA	294	89.2	109.5	14.1	29	9.9%	120	40.8%	6.85	6.10
2023	KCR	MLB	51	89.7	110.1	18.3	6	11.8%	19	37.3%	7.20	8.54
2024	BAL	AAA	88	86.5	106.8	13.1	4	4.5%	34	38.6%	2.64	4.35
2024	BAL	MLB	21	92.2	108.0	4.9	2	9.5%	12	57.1%	16.88	8.56
2025	KCR	AAA	20	87.8	109.1	9.1	0	0.0%	5	25.0%	13.50	3.78
2026	KCR	ST	12	94.1	109.3	8.6	0	0.0%	6	50.0%	27.00
2026	TBR	AAA	89	88.4	111.5	9.5	8	9.0%	27	30.3%	3.90	4.48
2026	TBR	MLB	17	95.1	109.9	16.8	2	11.8%	10	58.8%	11.25	11.34
Total	- - -	MLB	479	90.6	112.5	15.0	48	10.0%	223	46.6%	6.04	5.99

Jonathan Heasley

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

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