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Jack Flaherty
Jack Flaherty
Detroit Tigers • Pitcher
Age 30 • 6' 4" • 225 lb
Bats: R • Throws: R
MLB Debut: 2017-09-01
Born: Burbank , CA • USA
Draft: 2014
2026 Stats
W
0
L
6
ERA
5.94
WHIP
1.66
IP
47.0
SO
55
SV
0
HLD
0
G
11
GS
11
Career Stats
W
63
L
62
ERA
3.89
WHIP
1.22
IP
1037.2
SO
1185
SV
0
HLD
1
G
201
GS
195
Year-by-Year Pitching
Year Team GGSIP WLSVSO ERAWHIPAwards
2017 STL 6 5 21.1 — 2 — 20 6.33 1.55
2018 STL 28 28 151.0 8 9 — 182 3.34 1.11
2019 STL 33 33 196.1 11 8 — 231 2.75 0.97
2020 STL 9 9 40.1 4 3 — 49 4.91 1.21
2021 STL 17 15 78.1 9 2 — 85 3.22 1.06
2022 STL 9 8 36.0 2 1 — 33 4.25 1.61
2023 Total 29 27 144.1 8 9 — 148 4.99 1.58
2024 Total 28 28 162.0 13 7 — 194 3.17 1.07 WS
2025 DET 31 31 161.0 8 15 — 188 4.64 1.28
2026 DET 11 11 47.0 — 6 — 55 5.94 1.66
Spring Training
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2016 STL 1—1.0 ———1 0.001.00
2017 STL 4—7.0 ———10 2.571.43
2018 STL 5415.2 —2—24 4.600.96
2019 STL 5317.0 11—22 2.120.82
2020 STL 4411.2 11—11 3.091.46
2021 STL 4413.1 —2—14 5.401.58
2023 STL 5519.2 12—15 6.411.68
2024 DET 6618.1 ———26 2.950.98
2025 DET 4416.0 —1—16 3.941.06
2026 DET 4412.2 1——14 7.821.34
Postseason
Pitching
YearTeamGGSIPWLSVSOERAWHIP
2019 STL 3317.0 12—22 4.241.24
2020 STL 116.0 —1—8 1.501.33
2023 BAL 1—2.0 ———1 4.502.50
2024 LAD 5522.0 12—15 7.361.50
2025 DET 3210.0 —1—12 3.601.50
Game Logs
Season selector loads one year at a time.
Pitching
Date Opponent IP H R ER BB SO HR
2026-05-22 @ BAL 3.1 8 6 3 0 7 2
2026-05-17 vs TOR 6.0 5 4 4 0 4 1
2026-05-12 @ NYM 3.2 6 3 3 3 2 0
2026-05-06 vs BOS 5.0 3 4 2 1 10 0
2026-05-01 vs TEX 3.2 5 4 4 3 4 1
2026-04-25 @ CIN 2.0 5 6 6 2 4 3
2026-04-20 @ BOS 3.1 3 2 0 6 3 0
2026-04-15 vs KC 6.0 2 1 1 3 7 0
2026-04-09 @ MIN 5.2 5 1 1 3 6 1
2026-04-04 vs STL 4.0 3 5 5 4 6 0
2026-03-28 @ SD 4.1 4 3 2 4 2 0
Transactions
Entire history • newest first.
2026-04-16
RHP Jack Flaherty changed number to 9.
2026-04-15
RHP Jack Flaherty changed number to 42.
2025-04-16
RHP Jack Flaherty changed number to 9.
2025-04-15
RHP Jack Flaherty changed number to 42.
2025-02-07
Detroit Tigers signed free agent RHP Jack Flaherty.
2025-02-07
Detroit Tigers activated RHP Jack Flaherty.
2024-10-31
RHP Jack Flaherty elected free agency.
2024-07-31
Los Angeles Dodgers activated RHP Jack Flaherty.
2024-07-30
RHP Jack Flaherty roster status changed by Los Angeles Dodgers.
2024-07-30
Detroit Tigers traded RHP Jack Flaherty to Los Angeles Dodgers for C Thayron Liranzo and SS Trey Sweeney.
2024-03-27
RHP Jack Flaherty changed number to 9.
2023-12-20
Detroit Tigers signed free agent RHP Jack Flaherty.
2023-11-02
RHP Jack Flaherty elected free agency.
2023-08-02
Baltimore Orioles activated RHP Jack Flaherty.
2023-08-01
St. Louis Cardinals traded RHP Jack Flaherty to Baltimore Orioles for 2B César Prieto, LHP Drew Rom and RHP Zack Showalter.
2022-09-05
St. Louis Cardinals activated RHP Jack Flaherty from the 60-day injured list.
2022-08-31
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Springfield Cardinals.
2022-08-26
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Memphis Redbirds.
2022-08-16
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Springfield Cardinals.
2022-08-16
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Springfield Cardinals.
2022-08-10
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Memphis Redbirds.
2022-08-10
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Memphis Redbirds.
2022-07-11
St. Louis Cardinals transferred RHP Jack Flaherty from the 15-day injured list to the 60-day injured list. Right shoulder strain.
2022-06-27
St. Louis Cardinals placed RHP Jack Flaherty on the 15-day injured list. Right shoulder strain.
2022-06-15
St. Louis Cardinals activated RHP Jack Flaherty.
2022-06-07
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Memphis Redbirds.
2022-06-05
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Springfield Cardinals.
2022-05-20
St. Louis Cardinals transferred RHP Jack Flaherty from the 10-day injured list to the 60-day injured list. Right shoulder discomfort.
2022-04-04
St. Louis Cardinals placed RHP Jack Flaherty on the 10-day injured list. Right shoulder discomfort.
2021-09-24
St. Louis Cardinals activated RHP Jack Flaherty from the 10-day injured list.
2021-08-25
St. Louis Cardinals placed RHP Jack Flaherty on the 10-day injured list. Right shoulder strain.
2021-08-13
St. Louis Cardinals activated RHP Jack Flaherty.
2021-08-06
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Springfield Cardinals.
2021-07-27
St. Louis Cardinals sent RHP Jack Flaherty on a rehab assignment to Memphis Redbirds.
2021-07-02
St. Louis Cardinals placed RHP Jack Flaherty on the 60-day injured list. Left oblique.
2021-06-01
St. Louis Cardinals placed RHP Jack Flaherty on the 10-day injured list. Left oblique.
2019-02-11
P Jack Flaherty changed number to 42.
2019-02-11
RHP Jack Flaherty changed number to 22.
2019-02-11
Jack Flaherty changed number to 22.
2018-05-15
St. Louis Cardinals recalled RHP Jack Flaherty from Memphis Redbirds.
2018-04-29
St. Louis Cardinals optioned RHP Jack Flaherty to Memphis Redbirds.
2018-04-28
St. Louis Cardinals recalled Jack Flaherty from Memphis Redbirds.
2018-04-04
St. Louis Cardinals optioned RHP Jack Flaherty to Memphis Redbirds.
2018-03-28
St. Louis Cardinals recalled Jack Flaherty from Memphis Redbirds.
2018-03-18
St. Louis Cardinals optioned RHP Jack Flaherty to Memphis Redbirds.
2017-09-01
St. Louis Cardinals selected the contract of Jack Flaherty from Memphis Redbirds.
2017-02-16
St. Louis Cardinals invited non-roster RHP Jack Flaherty to spring training.
2016-03-12
RHP Jack Flaherty assigned to St. Louis Cardinals.
2014-06-19
St. Louis Cardinals signed RHP Jack Flaherty.
Scouting Report
Statcast-style percentiles • Basenerd theme
Season 2026
Ready
Basic Line
Season / Game
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Pitch Arsenal
Usage • Velo • Break • Spin • xwOBA
Pitch N Use% Velo HB IVB Spin xwOBA Whiff% Zone% Chase% BNStuff+ BNCtrl+
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Notes
Primary pitch summary
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Movement Profile (Induced Break)
Pitcher's View: HB vs Rise / Drop (in)
Circles: 12/18/24 in • Dots = pitch types (size ~ pitch count)
Pitch Location Heatmaps
KDE-style blur • fixed zone • catcher POV
vs. LHH
vs. RHH
Zone: left -0.7083 / right 0.7083 • bot 1.595 / top 3.394 • Domain: X [-2,2], Z [0,5]
Statcast Game Log
Per-game pitch metrics from Statcast
Date Pitches Velo BNStuff+ BNCtrl+ Whiff% Zone% Chase% K% BB% xwOBA
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