We're hiring a Senior Software Engineer to join our team! Learn more and apply here.

Jack Kochanowicz

Position: Starting Pitcher

Bats: Left • Throws: Right

6-7, 228lb (201cm, 103kg)

Team: Los Angeles Angels (majors, 60-day IL)

Born: December 22, 2000 in Philadelphia, PA us

Draft: Drafted by the Los Angeles Angels in the 3rd round of the 2019 MLB June Amateur Draft from Harriton HS (Bryn Mawr, PA).

High School: Harriton HS (Bryn Mawr, PA)

Rookie Status: Exceeded rookie limits during 2024 season

2026 Contract Status: Pre-Arb Eligible

Service Time (01/2026): 1.012 • Arb Eligible: 2028 • Free Agent: 2031

Full Name: Jack Von Kochanowicz

Pronunciation: \KO-hawn-o-wits\

Instagram: @jackkochanowicz_

View Player Info from the B-R Bullpen

Become a Stathead & surf this site ad-free.

SUMMARY

2026

Career

WAR

-0.7

-1.6

ERA

6.19

5.88

64.0

240.1

144

WHIP

1.578

1.552

Register Menu

Player News

Hide Majors

Hide Minors

Hide Other

Register Pitching

Register Pitching
Year	Age	AgeDif	Tm	Lg	Lev	Aff	W	L	W-L%	ERA	RA9	G	GS	GF	CG	SHO	SV	IP	H	R	ER	HR	BB	IBB	SO	HBP	BK	WP	BF	WHIP	H9	HR9	BB9	SO9	SO/W
2021	20	-1.9	Inland Empire	LAW	A	LAA	4	2	.667	6.91	7.78	20	18	0	0	0	0	83.1	102	72	64	12	35	0	73	3	0	10	385	1.644	11.0	1.3	3.8	7.9	2.09
2022	21	-0.8	Inland Empire	CALL	A	LAA	4	4	.500	4.99	5.62	17	9	1	0	0	0	57.2	57	36	32	6	18	0	53	3	0	5	248	1.301	8.9	0.9	2.8	8.3	2.94
2022	21	-2.2	Scottsdale	AZFL	Fal		1	1	.500	10.05	10.67	7	2	0	0	0	0	14.1	25	17	16	4	6	0	13	3	0	0	73	2.163	15.7	2.5	3.8	8.2	2.17
2023	22		2 Teams	2 Lgs	AA-A+	LAA	5	5	.500	5.27	5.84	21	21	0	1	0	0	94.0	103	61	55	15	25	0	69	11	0	5	407	1.362	9.9	1.4	2.4	6.6	2.76
2023	22	-2.3	Rocket City	SOUL	AA	LAA	4	5	.444	6.53	6.91	16	16	0	1	0	0	70.1	81	54	51	15	22	0	55	9	0	3	311	1.464	10.4	1.9	2.8	7.0	2.50
2023	22	-1.1	Tri-City	NORW	A+	LAA	1	0	1.000	1.52	2.66	5	5	0	0	0	0	23.2	22	7	4	0	3	0	14	2	0	2	96	1.056	8.4	0.0	1.1	5.3	4.67
2024	23	-1.5	Rocket City	SOUL	AA	LAA	5	8	.385	4.50	4.94	18	18	0	2	0	0	102.0	103	56	51	8	27	0	86	10	2	4	441	1.275	9.1	0.7	2.4	7.6	3.19
2024	23	-6.0	LAA	AL	Maj	LAA	2	6	.250	3.99	4.13	11	11	0	0	0	0	65.1	68	30	29	7	10	1	25	8	0	1	266	1.194	9.4	1.0	1.4	3.4	2.50
2025	24	-3.1	Salt Lake	PCL	AAA	LAA	0	2	.000	5.95	6.86	4	4	0	0	0	0	19.2	18	15	13	3	16	0	16	3	0	5	96	1.729	8.2	1.4	7.3	7.3	1.00
2025	24	-5.2	LAA	AL	Maj	LAA	3	11	.214	6.81	7.22	23	23	0	0	0	0	111.0	136	89	84	21	58	4	72	7	1	4	512	1.748	11.0	1.7	4.7	5.8	1.24
2026	25	-4.3	LAA	AL	Maj	LAA	2	5	.286	6.19	6.61	13	13	0	0	0	0	64.0	65	47	44	7	36	1	47	5	0	6	296	1.578	9.1	1.0	5.1	6.6	1.31
Year	Age	AgeDif	Tm	Lg	Lev	Aff	W	L	W-L%	ERA	RA9	G	GS	GF	CG	SHO	SV	IP	H	R	ER	HR	BB	IBB	SO	HBP	BK	WP	BF	WHIP	H9	HR9	BB9	SO9	SO/W
Majors (3 seasons)					Majors		7	22	.241	5.88	6.22	47	47	0	0	0	0	240.1	269	166	157	35	104	6	144	20	1	11	1074	1.552	10.1	1.3	3.9	5.4	1.38
Minors (5 seasons)					Minors		18	21	.462	5.43	6.06	80	70	1	3	0	0	356.2	383	240	215	44	121	0	297	30	2	29	1577	1.413	9.7	1.1	3.1	7.5	2.45
Other (1 season)					Other		1	1	.500	10.05	10.67	7	2	0	0	0	0	14.1	25	17	16	4	6	0	13	3	0	0	73	2.163	15.7	2.5	3.8	8.2	2.17
All Levels (6 Seasons)							26	44	.371	5.71	6.23	134	119	1	3	0	0	611.1	677	423	388	83	231	6	454	53	3	40	2724	1.485	10.0	1.2	3.4	6.7	1.97

AAA (1 season)					Minors		0	2	.000	5.95	6.86	4	4	0	0	0	0	19.2	18	15	13	3	16	0	16	3	0	5	96	1.729	8.2	1.4	7.3	7.3	1.00
AA (2 seasons)					Minors		9	13	.409	5.33	5.74	34	34	0	3	0	0	172.1	184	110	102	23	49	0	141	19	2	7	752	1.352	9.6	1.2	2.6	7.4	2.88
A+ (1 season)					Minors		1	0	1.000	1.52	2.66	5	5	0	0	0	0	23.2	22	7	4	0	3	0	14	2	0	2	96	1.056	8.4	0.0	1.1	5.3	4.67
A (2 seasons)					Minors		8	6	.571	6.13	6.89	37	27	1	0	0	0	141.0	159	108	96	18	53	0	126	6	0	15	633	1.504	10.1	1.1	3.4	8.0	2.38