Jack Flaherty

Position: Starting Pitcher

Bats: Right • Throws: Right

6-4, 225lb (193cm, 102kg)

Born: October 15, 1995 in Burbank, CA us

Draft: Drafted by the St. Louis Cardinals in the 1st round (34th) of the 2014 MLB June Amateur Draft from Harvard-Westlake HS (Los Angeles, CA).

High School: Harvard-Westlake HS (Los Angeles, CA)

Rookie Status: Exceeded rookie limits during 2018 season

2026 Contract Status: Signed thru 2026, 2 yrs/$35M (25-26)

Service Time (01/2026): 8.006 • Free Agent: 2027

Agents: CAA Sports

National Team: us USA (18U)

Full Name: Jack Rafe Flaherty

Nicknames: Flare

Instagram: @jflare

View Player Info from the B-R Bullpen

2024 World Series

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SUMMARY

2026

Career

WAR

-0.3

14.0

ERA

4.97

3.88

206

200

70.2

1061.1

1217

WHIP

1.528

1.220

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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
2014	18	-2.4	Cardinals	GULF	Rk	STL	1	1	.500	1.59	3.57	8	6	0	0	0	0	22.2	18	9	4	1	4	1	28	3	0	2	94	0.971	7.1	0.4	1.6	11.1	7.00
2015	19	-2.9	Peoria	MIDW	A	STL	9	3	.750	2.84	3.60	18	18	0	0	0	0	95.0	92	38	30	2	31	0	97	7	1	10	409	1.295	8.7	0.2	2.9	9.2	3.13
2016	20	-3.1	Palm Beach	FLOR	A+	STL	5	9	.357	3.56	4.23	24	23	0	0	0	0	134.0	129	63	53	8	45	0	126	2	0	11	564	1.299	8.7	0.5	3.0	8.5	2.80
2017	21		2 Teams	2 Lgs	AAA-AA	STL	14	4	.778	2.18	2.18	25	25	0	0	0	0	148.2	120	36	36	12	35	2	147	0	0	5	581	1.043	7.3	0.7	2.1	8.9	4.20
2017	21	-5.6	Memphis	PCL	AAA	STL	7	2	.778	2.74	2.74	15	15	0	0	0	0	85.1	73	26	26	10	24	2	85	0	0	4	339	1.137	7.7	1.1	2.5	9.0	3.54
2017	21	-3.1	Springfield	TL	AA	STL	7	2	.778	1.42	1.42	10	10	0	0	0	0	63.1	47	10	10	2	11	0	62	0	0	1	242	0.916	6.7	0.3	1.6	8.8	5.64
2017	21	-7.4	STL	NL	Maj	STL	0	2	.000	6.33	6.33	6	5	0	0	0	0	21.1	23	15	15	4	10	1	20	1	0	0	94	1.547	9.7	1.7	4.2	8.4	2.00
2018	22	-4.6	Memphis	PCL	AAA	STL	4	1	.800	2.27	2.84	5	5	0	1	0	0	31.2	22	10	8	2	7	0	41	3	1	0	126	0.916	6.3	0.6	2.0	11.7	5.86
2018	22	-6.2	STL	NL	Maj	STL	8	9	.471	3.34	3.52	28	28	0	0	0	0	151.0	108	59	56	20	59	3	182	11	0	6	615	1.106	6.4	1.2	3.5	10.8	3.08
2019	23	-5.3	STL	NL	Maj	STL	11	8	.579	2.75	2.84	33	33	0	0	0	0	196.1	135	62	60	25	55	2	231	7	0	6	772	0.968	6.2	1.1	2.5	10.6	4.20
2020	24	-4.4	STL	NL	Maj	STL	4	3	.571	4.91	4.91	9	9	0	0	0	0	40.1	33	22	22	6	16	0	49	3	0	1	170	1.215	7.4	1.3	3.6	10.9	3.06
2021	25		2 Teams	2 Lgs	AAA-AA	STL	0	0		5.00	5.00	3	3	0	0	0	0	9.0	8	5	5	1	1	0	11	0	0	2	37	1.000	8.0	1.0	1.0	11.0	11.00
2021	25	-2.0	Memphis	AAAE	AAA	STL	0	0		3.60	3.60	2	2	0	0	0	0	5.0	5	2	2	0	1	0	8	0	0	1	21	1.200	9.0	0.0	1.8	14.4	8.00
2021	25	0.3	Springfield	AACN	AA	STL	0	0		6.75	6.75	1	1	0	0	0	0	4.0	3	3	3	1	0	0	3	0	0	1	16	0.750	6.8	2.3	0.0	6.8
2021	25	-3.9	STL	NL	Maj	STL	9	2	.818	3.22	4.02	17	15	0	0	0	0	78.1	57	35	28	12	26	1	85	6	0	4	322	1.060	6.5	1.4	3.0	9.8	3.27
2022	26		2 Teams	2 Lgs	AA-AAA	STL	1	2	.333	3.00	3.33	7	7	0	0	0	0	27.0	22	10	9	2	7	0	34	0	0	2	108	1.074	7.3	0.7	2.3	11.3	4.86
2022	26	-1.0	Memphis	IL	AAA	STL	1	2	.333	4.35	5.23	3	3	0	0	0	0	10.1	9	6	5	2	3	0	11	0	0	2	43	1.161	7.8	1.7	2.6	9.6	3.67
2022	26	1.5	Springfield	TL	AA	STL	0	0		2.16	2.16	4	4	0	0	0	0	16.2	13	4	4	0	4	0	23	0	0	0	65	1.020	7.0	0.0	2.2	12.4	5.75
2022	26	-3.2	STL	NL	Maj	STL	2	1	.667	4.25	4.50	9	8	0	0	0	0	36.0	36	18	17	4	22	0	33	5	0	0	167	1.611	9.0	1.0	5.5	8.3	1.50
2023	27		2 Teams	2 Lgs	Maj	STL	8	9	.471	4.99	5.18	29	27	0	0	0	0	144.1	162	83	80	17	66	2	148	12	0	8	650	1.580	10.1	1.1	4.1	9.2	2.24
2023	27	-2.2	STL	NL	Maj	STL	7	6	.538	4.43	4.60	20	20	0	0	0	0	109.2	116	56	54	10	54	0	106	8	0	6	485	1.550	9.5	0.8	4.4	8.7	1.96
2023	27	-1.7	BAL	AL	Maj	BAL	1	3	.250	6.75	7.01	9	7	0	0	0	0	34.2	46	27	26	7	12	2	42	4	0	2	165	1.673	11.9	1.8	3.1	10.9	3.50
2024	28		2 Teams	2 Lgs	Maj	DET	13	7	.650	3.17	3.39	28	28	0	0	0	0	162.0	135	61	57	24	38	0	194	4	0	6	649	1.068	7.5	1.3	2.1	10.8	5.11
2024	28	-1.0	DET	AL	Maj	DET	7	5	.583	2.95	3.21	18	18	0	0	0	0	106.2	83	38	35	15	19	0	133	3	0	4	415	0.956	7.0	1.3	1.6	11.2	7.00
2024	28	-1.1	LAD	NL	Maj	LAD	6	2	.750	3.58	3.74	10	10	0	0	0	0	55.1	52	23	22	9	19	0	61	1	0	2	234	1.283	8.5	1.5	3.1	9.9	3.21
2025	29	-0.2	DET	AL	Maj	DET	8	15	.348	4.64	4.75	31	31	0	0	0	0	161.0	147	85	83	23	59	1	188	5	0	4	681	1.280	8.2	1.3	3.3	10.5	3.19
2026	30	5.0	Erie	EL	AA	DET	1	0	1.000	3.18	3.18	1	1	0	0	0	0	5.2	3	2	2	2	1	0	7	0	0	0	22	0.706	4.8	3.2	1.6	11.1	7.00
2026	30	0.7	DET	AL	Maj	DET	1	8	.111	4.97	5.99	16	16	0	0	0	0	70.2	71	47	39	8	37	1	87	5	1	5	326	1.528	9.0	1.0	4.7	11.1	2.35
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 (10 seasons)					Majors		64	64	.500	3.88	4.13	206	200	0	0	0	0	1061.1	907	487	457	143	388	11	1217	59	1	40	4446	1.220	7.7	1.2	3.3	10.3	3.14
Minors (8 seasons)					Minors		35	20	.636	2.79	3.29	91	88	0	1	0	0	473.2	414	173	147	30	131	3	491	15	2	32	1941	1.151	7.9	0.6	2.5	9.3	3.75
All Levels (13 Seasons)							99	84	.541	3.54	3.87	297	288	0	1	0	0	1535.0	1321	660	604	173	519	14	1708	74	3	72	6387	1.199	7.7	1.0	3.0	10.0	3.29

AAA (4 seasons)					Minors		12	5	.706	2.79	2.99	25	25	0	1	0	0	132.1	109	44	41	14	35	2	145	3	1	7	529	1.088	7.4	1.0	2.4	9.9	4.14
AA (4 seasons)					Minors		8	2	.800	1.91	1.91	16	16	0	0	0	0	89.2	66	19	19	5	16	0	95	0	0	2	345	0.914	6.6	0.5	1.6	9.5	5.94
A+ (1 season)					Minors		5	9	.357	3.56	4.23	24	23	0	0	0	0	134.0	129	63	53	8	45	0	126	2	0	11	564	1.299	8.7	0.5	3.0	8.5	2.80
A (1 season)					Minors		9	3	.750	2.84	3.60	18	18	0	0	0	0	95.0	92	38	30	2	31	0	97	7	1	10	409	1.295	8.7	0.2	2.9	9.2	3.13
Rk (1 season)					Minors		1	1	.500	1.59	3.57	8	6	0	0	0	0	22.2	18	9	4	1	4	1	28	3	0	2	94	0.971	7.1	0.4	1.6	11.1	7.00