Jack Flaherty

HandednessBats Right · Throws Right

Listed at6 ft 4 in · 225 lb

BornOctober 15, 1995 · Burbank, CA, USA

MLB debutSeptember 1, 2017

Seasons9 (2017–2025)

St. Louis Cardinals 2017–2022; Baltimore Orioles 2023; St. Louis Cardinals 2023; Detroit Tigers 2024; Los Angeles Dodgers 2024; Detroit Tigers 2025

Percentile snapshot

2024 season — qualified pitchers

1.8

64.9

84.2

SHO

135

94.7

87.7

194

77.2

31.6

162.0

ERA

3.17

78.9

WHIP

1.068

84.2

K/9

10.78

96.5

FIP

3.45

71.9

FIP-

84.8

71.9

ERA+

128.2

80.7

sWAR

3.3

64.9

of 58 qualified 2024 pitchers (min 162 IP)

Career, era-adjusted

sWAR

14.2

90.5

sWAR measured against every career in history, 24,011 of them. Only era-adjusted career stats carry a percentile — a raw career total gets a rank instead, because pooling the 1890s with the 2020s is a choice, not a measurement.

Season by season

Batting

Season	G	PA	AB	R	H	2B	HR	RBI	BB	SO	SB	CS	BA	OBP	SLG	OPS	wRC+	OPS+	wOBA	sWAR
2017	6	6	6	0	0	0	0	0	0	2	0	0	.000	.000	.000	.000	-124.0	-100.0	.000	-0.4
2018	31	52	46	2	7	0	0	0	2	20	0	0	.152	.188	.152	.340	-12.5	-4.6	.161	2.6
2019	38	66	54	4	10	3	0	4	2	17	1	1	.185	.211	.241	.451	12.8	19.0	.197	5.5
2020	9	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	0.1
2021	17	26	17	2	2	0	1	3	5	7	0	0	.118	.304	.294	.598	74.2	66.7	.282	1.7
2022	9	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	0.2
2023	29	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	0.4
2024	28	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	3.3
2025	31	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	0.7

Pitching

Season	G	GS	W	L	H	ER	BB	SO	HR	IP	ERA	WHIP	K/9	FIP	FIP-	ERA+	sWAR
2017	6	5	0	2	23	15	10	20	4	21.3	6.33	1.547	8.44	5.28	125.8	66.4	-0.4
2018	28	28	8	9	108	56	59	182	20	151.0	3.34	1.106	10.85	3.83	98.2	116.8	2.6
2019	33	33	11	8	135	60	55	231	25	196.3	2.75	.968	10.59	3.42	79.6	156.3	5.5
2020	9	9	4	3	33	22	16	49	6	40.3	4.91	1.215	10.93	4.13	96.0	87.7	0.1
2021	17	15	9	2	57	28	26	85	12	78.3	3.22	1.060	9.77	4.17	103.5	125.4	1.7
2022	9	8	2	1	36	17	22	33	4	36.0	4.25	1.611	8.25	5.03	127.3	93.1	0.2
2023	29	27	8	9	162	80	66	148	17	144.3	4.99	1.580	9.23	4.36	101.0	86.6	0.4
2024	28	28	13	7	135	57	38	194	24	162.0	3.17	1.068	10.78	3.45	84.8	128.2	3.3
2025	31	31	8	15	147	83	59	188	23	161.0	4.64	1.280	10.51	3.77	91.2	89.0	0.7
2026	19	19	3	8	80	44	42	102	11	86.3	4.59	1.413	10.63	—	—	—	—

sWAR is the season TOTAL for a player who both hit and pitched: the record book carries one figure per season, not a split, so the same number appears on both lines rather than being counted twice.

Greyed rows are the current season, sourced from our own game log rather than the archived record book: wRC+, OPS+, wOBA, FIP and sWAR land when the season is archived, and are never approximated before then.

Career totals

Batting

198

150

123

RBI

.1545

OBP

.2090

SLG

.2033

OPS

.4123

Pitching

G (P)

190

184

SHO

991

SO (P)

1,130

458th-most career SO (P)

BB allowed

351

ERA

3.797

WHIP

1.1982

K/9

10.27

Totals run through the last archived season (2025), so the current season in the table above is not in them yet. A total is called out only where it ranks in the all-time top 500; hover a figure for its rank and the size of the field it was ranked in. Ranks are absolute facts and carry no percentile — the population for "career home runs" would be an editorial choice, and the rank is not.

Best games

Batting

Date	Game	AB	R	H	2B	HR	RBI	TB
2021-05-07	COL @ STL Gameday	2	1	1	0	1	1	4
2019-07-16	PIT @ STL Gameday	2	0	1	1	0	1	2
2019-06-18	MIA @ STL Gameday	2	0	1	1	0	0	2
2019-07-07	STL @ SF Gameday	2	0	1	1	0	0	2
2019-05-14	STL @ ATL Gameday	3	1	1	0	0	1	1

Pitching

Date	Game	IP	H	R	ER	BB	SO	HR
2024-04-30	STL @ DET Gameday	6.2	2	0	0	1	14	0
2018-05-20	PHI @ STL Gameday	7.2	2	1	1	1	13	1
2018-06-22	STL @ MIL Gameday	7.0	1	1	1	2	13	1
2019-09-24	STL @ AZ Gameday	7.0	1	0	0	2	11	0
2020-09-20	STL @ PIT Gameday	6.0	2	1	1	2	11	0

Ranked from our own play-by-play game log, which begins in 1901 — not from the record book, so a career played outside it shows nothing here rather than a short list.