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John Klein

Position: Pitcher

Bats: Right • Throws: Right

6-5, 225lb (196cm, 102kg)

Team: Minnesota Twins (minors, 40-man)

Born: April 22, 2002 in Brooklyn Park, MN us

School: Iowa Central Community College (Fort Dodge, IA)

Rookie Status: Still Intact through 2026

2026 Contract Status: Not Updated

Full Name: John Joseph Klein

Instagram: @j0hn.k1ein

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SUMMARY

2026

Career

WAR

0.1

ERA

4.15

4.1

WHIP

1.615

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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	19	-1.6	Willmar	NWDS	Smr		0	0		9.82	9.82	4	1		0	0	0	7.1	8	8	8	0	6	0	11	2	0	1	38	1.909	9.8	0.0	7.4	13.5	1.83
2022	20	-0.7	Willmar	NWDS	Smr		3	4	.429	3.09	4.37	9	5		0	0	1	35.0	30	17	12	3	19	0	42	4	0	1	156	1.400	7.7	0.8	4.9	10.8	2.21
2022	20	-1.0	Twins	FCL	Rk	MIN	0	0		0.00	0.00	2	0	0	0	0	0	2.0	1	0	0	0	1	0	2	0	0	0	9	1.000	4.5	0.0	4.5	9.0	2.00
2023	21		3 Teams	3 Lgs	A-Rk-A+	MIN	2	4	.333	4.17	4.47	13	13	0	1	0	0	58.1	53	29	27	4	23	0	61	10	1	3	255	1.303	8.2	0.6	3.5	9.4	2.65
2023	21	-2.1	Cedar Rapids	MIDW	A+	MIN	0	0		3.60	3.60	1	1	0	0	0	0	5.0	6	2	2	0	1	0	4	1	0	1	22	1.400	10.8	0.0	1.8	7.2	4.00
2023	21	-1.2	Fort Myers	FLOR	A	MIN	2	1	.667	2.97	2.97	6	6	0	1	0	0	30.1	18	10	10	1	13	0	30	3	1	0	122	1.022	5.3	0.3	3.9	8.9	2.31
2023	21	0.2	Twins	FCL	Rk	MIN	0	3	.000	5.87	6.65	6	6	0	0	0	0	23.0	29	17	15	3	9	0	27	6	0	2	111	1.652	11.3	1.2	3.5	10.6	3.00
2024	22	-1.1	Cedar Rapids	MIDW	A+	MIN	8	3	.727	4.57	4.57	22	20	0	0	0	0	100.1	102	51	51	9	38	0	90	7	0	3	441	1.395	9.1	0.8	3.4	8.1	2.37
2025	23		2 Teams	2 Lgs	AA-AAA	MIN	7	10	.412	3.98	5.25	31	15	0	0	0	0	106.1	96	62	47	7	37	0	128	11	0	6	464	1.251	8.1	0.6	3.1	10.8	3.46
2025	23	-4.3	St. Paul	IL	AAA	MIN	0	5	.000	6.66	7.01	7	4	0	0	0	0	25.2	26	20	19	1	13	0	33	3	0	2	117	1.519	9.1	0.4	4.6	11.6	2.54
2025	23	-1.5	Wichita	TL	AA	MIN	7	5	.583	3.12	4.69	24	11	0	0	0	0	80.2	70	42	28	6	24	0	95	8	0	4	347	1.165	7.8	0.7	2.7	10.6	3.96
2026	24	-3.3	St. Paul	IL	AAA	MIN	2	4	.333	6.32	6.47	19	14	0	0	0	0	57.0	57	41	40	14	27	0	65	4	3	3	254	1.474	9.0	2.2	4.3	10.3	2.41
2026	24	-5.2	MIN	AL	Maj	MIN	0	1	.000	4.15	4.15	3	0	2	0	0	0	4.1	3	2	2	1	4	0	2	0	0	0	19	1.615	6.2	2.1	8.3	4.2	0.50
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 (1 season)					Majors		0	1	.000	4.15	4.15	3	0	2	0	0	0	4.1	3	2	2	1	4	0	2	0	0	0	19	1.615	6.2	2.1	8.3	4.2	0.50
Minors (5 seasons)					Minors		19	21	.475	4.58	5.08	87	62	0	1	0	0	324.0	309	183	165	34	126	0	346	32	4	15	1423	1.343	8.6	0.9	3.5	9.6	2.75
Other (2 seasons)					Other		3	4	.429	4.25	5.31	13	6		0	0	1	42.1	38	25	20	3	25	0	53	6	0	2	194	1.488	8.1	0.6	5.3	11.3	2.12
All Levels (6 Seasons)							22	26	.458	4.54	5.10	103	68	2	1	0	1	370.2	350	210	187	38	155	0	401	38	4	17	1636	1.362	8.5	0.9	3.8	9.7	2.59

AAA (2 seasons)					Minors		2	9	.182	6.42	6.64	26	18	0	0	0	0	82.2	83	61	59	15	40	0	98	7	3	5	371	1.488	9.0	1.6	4.4	10.7	2.45
AA (1 season)					Minors		7	5	.583	3.12	4.69	24	11	0	0	0	0	80.2	70	42	28	6	24	0	95	8	0	4	347	1.165	7.8	0.7	2.7	10.6	3.96
A+ (2 seasons)					Minors		8	3	.727	4.53	4.53	23	21	0	0	0	0	105.1	108	53	53	9	39	0	94	8	0	4	463	1.396	9.2	0.8	3.3	8.0	2.41
A (1 season)					Minors		2	1	.667	2.97	2.97	6	6	0	1	0	0	30.1	18	10	10	1	13	0	30	3	1	0	122	1.022	5.3	0.3	3.9	8.9	2.31
Rk (2 seasons)					Minors		0	3	.000	5.40	6.12	8	6	0	0	0	0	25.0	30	17	15	3	10	0	29	6	0	2	120	1.600	10.8	1.1	3.6	10.4	2.90