Jack Flaherty stats
Last played for the Detroit Tigers, 2026
Starting Pitcher · #9
15-Day ILRight Forearm · due back September 24
Bio
- Height
- 6' 4"
- Debut
- 2017
- Draft
- 2014Rd 1, Pk 34
Bio
- Height
- 6' 4"
- Debut
- 2017
- Draft
- 2014Rd 1, Pk 34
Stats
Standard
Career regular season
- GP
- 215
- W
- 66
- L
- 64
- ERA
- 3.86
- IP
- 1077.0
- K
- 1,232
- BB
- 393
- WHIP
- 1.22
Ranked among MLB players who qualify (W, IP, K: 10+ games; ERA, WHIP: 100+ IP) that season; only the top 50 are shown. How each stat qualifies: glossary.
| GP: Games the player appeared in, however briefly. | W: Games in which this pitcher was credited with the win. | L: Games in which this pitcher was charged with the loss. | ERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent. | IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs. | K: Batters this pitcher struck out. | BB: Times the batter reached first base on four balls. | WHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite. | ||
|---|---|---|---|---|---|---|---|---|---|
| 2017 | STL | 6 | 0 | 2 | 6.33 | 21.1 | 20 | 10 | 1.55 |
| 2018 | STL | 28 | 8 | 9 | 3.34 | 151.0 | 182 | 59 | 1.11 |
| 2019 | STL | 39 | 11 | 8 | 2.75 | 196.1 | 231 | 55 | 0.97 |
| 2020 | STL | 9 | 4 | 3 | 4.91 | 40.1 | 49 | 16 | 1.21 |
| 2021 | STL | 17 | 9 | 2 | 3.22 | 78.1 | 85 | 26 | 1.06 |
| 2022 | STL | 9 | 2 | 1 | 4.25 | 36.0 | 33 | 22 | 1.61 |
| 2023 |  STL/BAL | 29 | 8 | 9 | 4.99 | 144.1 | 148 | 66 | 1.58 |
| 2024 |  DET/LAD | 28 | 13 | 7 | 3.17 | 162.0 | 194 | 38 | 1.07 |
| 2025 | DET | 31 | 8 | 15 | 4.64 | 161.0 | 188 | 59 | 1.28 |
| 2026 | DET | 19 | 3 | 8 | 4.59 | 86.1 | 102 | 42 | 1.41 |
Career Postseason
- GP
- 13
- W
- 2
- L
- 6
- ERA
- 5.05
- IP
- 57.0
- K
- 58
- BB
- 26
- WHIP
- 1.44
Expanded
Career regular season
- QS
- 78
- CG
- 0
- SHO
- 0
- K/9
- 10.3
- GB
- 1,091
- FB
- 1,560
- G/F
- 0.70
- WP
- 40
Ranked among MLB players who qualify (QS, CG, SHO: 10+ GS; K/9: 100+ IP) that season; only the top 50 are shown. How each stat qualifies: glossary.
| QS: Quality starts: six innings or more with no more than three earned runs. | CG: Complete games, pitched from the first out to the last. | SHO: Shutouts — complete games with no run allowed. | K/9: Strikeouts for every nine innings pitched. | GB: Ground balls hit against this pitcher. | FB: Fly balls hit against this pitcher. | G/F: Ground balls for every fly ball hit against this pitcher. | WP: Wild pitches — throws the catcher had no chance to stop. | ||
|---|---|---|---|---|---|---|---|---|---|
| 2017 | STL | 0 | 0 | 0 | 8.4 | 31 | 32 | 1 | 0 |
| 2018 | STL | 10 | 0 | 0 | 10.8 | 157 | 206 | 0.8 | 6 |
| 2019 | STL | 20 | 0 | 0 | 10.6 | 156 | 188 | 0.8 | 6 |
| 2020 | STL | 2 | 0 | 0 | 10.9 | 46 | 56 | 0.8 | 1 |
| 2021 | STL | 9 | 0 | 0 | 9.8 | 82 | 123 | 0.7 | 4 |
| 2022 | STL | 2 | 0 | 0 | 8.3 | 37 | 34 | 1.1 | 0 |
| 2023 | STL/BAL | 8 | 0 | 0 | 9.2 | 182 | 241 | 0.8 | 8 |
| 2024 | DET/LAD | 15 | 0 | 0 | 10.8 | 166 | 247 | 0.7 | 6 |
| 2025 | DET | 10 | 0 | 0 | 10.5 | 159 | 270 | 0.6 | 4 |
| 2026 | DET | 2 | 0 | 0 | 10.6 | 75 | 163 | 0.5 | 5 |
Latest performance
Jack Flaherty
Jul 20 · @ CHC · W 8-6 F/10
- IP
- 4.0
- H
- 4
- R
- 3
- ER
- 3
- BB
- 2
- K
- 4
- HR
- 2
- ERA
- 4.59
Games
All games| Date | Opponent | IP | H | R | ER | K |
|---|---|---|---|---|---|---|
| Mon, Jul 20 | at CHCW 8-6 F/10 | 4 | 4 | 3 | 3 | 4 |
| Fri, Jul 10 | vs PHIW 10-2 | 6 | 2 | 2 | 2 | 6 |
| Sat, Jul 04 | at TEXW 3-0 | 5.2 | 3 | 0 | 0 | 5 |
| Sun, Jun 28 | vs HOUL 7-5 F/10 | 5 | 2 | 0 | 0 | 9 |
| Fri, Jun 12 | at CLEL 3-2 | 3 | 3 | 2 | 2 | 1 |
| Sun, Jun 07 | vs SEAW 5-4 | 5 | 6 | 3 | 3 | 7 |
What were Jack Flaherty's career stats?
Jack Flaherty played 10 seasons for the Cardinals and the Tigers. He had 66 wins and 1,232 strikeouts with a 3.86 ERA over 1,077.0 innings. His best season was 2024: 13 wins, a 3.17 ERA and 194 strikeouts.
League leaderboards and awards
10 seasons, 5 postseasons, 2017 to 2026
Jack Flaherty finished top 10 in a stat 2 times.
Championships
- 2024 World Series with the Los Angeles Dodgers
Season top 10 finishes
Among qualified MLB players each season, as the glossary defines each stat. All-time places are among players on file.
More on Jack Flaherty
Playoff series
Jack Flaherty played 9 games across 3 MLB postseasons in 6 series — 2 won, 4 lost.
| IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs. | H: Times the batter reached base by hitting the ball, without help from an error. | ER: Earned runs allowed — runs that scored without help from an error. | K: Batters this pitcher struck out. | ||||
|---|---|---|---|---|---|---|---|
| 2025 | CLE | Won 1-0 | 1 | 4.2 | 3 | 1 | 4 |
| 2025 | SEA | Lost 0-2 | 2 | 5.1 | 4 | 3 | 8 |
| 2024 |  SD | Lost 0-1 | 1 | 5.1 | 5 | 4 | 2 |
| 2024 |  NYM | Lost 1-1 | 2 | 10.0 | 10 | 8 | 6 |
| 2024 |  NYY | Won 2-0 | 2 | 6.2 | 9 | 6 | 7 |
| 2023 | TEX | Lost 0-1 | 1 | 2.0 | 2 | 1 | 1 |
Totals, from MLB game logs since the 2022 postseason — earlier series are not counted.
Jack Flaherty against each club
- vs Cleveland Guardians (10)
- vs Houston Astros (7)
- vs Pittsburgh Pirates (7)
- vs Toronto Blue Jays (7)
- vs Chicago White Sox (6)
- vs San Diego Padres (6)
- vs Seattle Mariners (6)
- vs Texas Rangers (6)
- vs Arizona Diamondbacks (5)
- vs Boston Red Sox (5)
- vs Chicago Cubs (5)
- vs Milwaukee Brewers (5)
- vs New York Yankees (5)
- vs Tampa Bay Rays (5)
- vs Los Angeles Angels (4)
- vs Minnesota Twins (4)
- vs Washington Nationals (4)
- vs Athletics (3)
- vs Cincinnati Reds (3)
- vs Kansas City Royals (3)
- vs Los Angeles Dodgers (3)
- vs New York Mets (3)
- vs Baltimore Orioles (2)
- vs Colorado Rockies (2)
- vs Miami Marlins (2)
- vs Philadelphia Phillies (2)
- vs San Francisco Giants (2)
- vs St. Louis Cardinals (2)
- vs Atlanta Braves (1)
Similar players
Closest career per-game profiles to Jack Flaherty among MLB players at the same position.
- Kevin GausmanCHCAlike in Wins, Innings pitched, WHIP86out of 100 on profile similarity
- Jesus LuzardoPHIAlike in WHIP, Innings pitched, Wins86out of 100 on profile similarity
- Luis CastilloCHWAlike in WHIP, Wins, Strikeouts83out of 100 on profile similarity
- Eury PerezMIAAlike in Innings pitched, Strikeouts, Wins83out of 100 on profile similarity
- Zac GallenAlike in Strikeouts, WHIP, Innings pitched83out of 100 on profile similarity
Compare Jack Flaherty with Kevin Gausman, Jesus Luzardo, Luis Castillo