Jack Flaherty
Career 66–64 · 3.85 ERA · 1,233 SO · 1079.0 IP · 198 G · 19 H · 1 HR · 7 RBI · .154 AVG
Seasons leading his league
4
2 best in baseball
2 league only
6
Top-5 finishes
2
Title seasons
3
Categories led
2019
Best season
Spanning 2019–2024, peaking at 2 titles in 2019.
Team records
#5 Cardinals 2019 WHIP
All-Time Standing
Against every player since 1871Among league leaders
- 1,384th League titles 4
- 1,235th Best in baseball 2
- 3,509th Top-5 finishes 6
Each rank is against the players who have achieved that thing at least once.
Career leaderboards
- 13th Strikeouts / 9 10.28
- 206th Walks + Hits / IP 1.21
- 340th Pitcher Fielding Percentage .967
- 378th Strikeouts 1,233
All-time career totals, top 500 per category.
Where He Led
led all of MLB led his league| Category | Titles | Best | Streak | Seasons |
|---|---|---|---|---|
| Pitcher Fielding Percentage | 2 | 1st | — | 2019 1.000 2024 1.000 |
| Strikeouts / 9 | 1 | 1st | — | 2024 AL 10.78 |
| Walks + Hits / IP | 1 | 1st | — | 2019 NL 0.97 |
Title Seasons
2 seasons with at least one title| Year | Titles | Led in |
|---|---|---|
| 2024 | 2 | K/9 10.78 P FPCT 1.000 |
| 2019 | 2 | WHIP 0.97 P FPCT 1.000 |
Pitching
led the league 10 seasons| Year | Team | Lg | W | L | ERA | G | GS | SV | IP | H | ER | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | SLN | NL | 0 | 2 | 6.33 | 6 | 5 | 0 | 21.1 | 23 | 15 | 4 | 10 | 20 | 1.55 |
| 2018 | SLN | NL | 8 | 9 | 3.34 | 28 | 28 | 0 | 151.0 | 108 | 56 | 20 | 59 | 182 | 1.11 |
| 2019 | SLN | NL | 11 | 8 | 2.75 | 33 | 33 | 0 | 196.1 | 135 | 60 | 25 | 55 | 231 | 0.97 |
| 2020 | SLN | NL | 4 | 3 | 4.91 | 9 | 9 | 0 | 40.1 | 33 | 22 | 6 | 16 | 49 | 1.21 |
| 2021 | SLN | NL | 9 | 2 | 3.22 | 17 | 15 | 0 | 78.1 | 57 | 28 | 12 | 26 | 85 | 1.06 |
| 2022 | SLN | NL | 2 | 1 | 4.25 | 9 | 8 | 0 | 36.0 | 36 | 17 | 4 | 22 | 33 | 1.61 |
| 2023 | SLN +1 | NL | 8 | 9 | 4.99 | 29 | 27 | 0 | 144.1 | 162 | 80 | 17 | 66 | 148 | 1.58 |
| 2024 | DET +1 | AL | 13 | 7 | 3.17 | 28 | 28 | 0 | 162.0 | 135 | 57 | 24 | 38 | 194 | 1.07 |
| 2025 | DET | AL | 8 | 15 | 4.64 | 31 | 31 | 0 | 161.0 | 147 | 83 | 23 | 59 | 188 | 1.28 |
| 2026 | DET | AL | 3 | 8 | 4.48 | 20 | 19 | 0 | 88.1 | 81 | 44 | 11 | 42 | 103 | 1.39 |
| Career | — | — | 66 | 64 | 3.85 | 210 | 203 | 0 | 1079.0 | 917 | 462 | 146 | 393 | 1,233 | 1.21 |
Batting
9 seasons| Year | Team | Lg | G | AB | R | H | 2B | 3B | HR | RBI | BB | SO | SB | AVG | OBP | SLG | OPS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | SLN | NL | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | .000 | .000 | .000 | .000 |
| 2018 | SLN | NL | 31 | 46 | 2 | 7 | 0 | 0 | 0 | 0 | 2 | 20 | 0 | .152 | .188 | .152 | .340 |
| 2019 | SLN | NL | 38 | 54 | 4 | 10 | 3 | 0 | 0 | 4 | 2 | 17 | 1 | .185 | .211 | .241 | .451 |
| 2020 | SLN | NL | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — |
| 2021 | SLN | NL | 17 | 17 | 2 | 2 | 0 | 0 | 1 | 3 | 5 | 7 | 0 | .118 | .304 | .294 | .598 |
| 2022 | SLN | NL | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — |
| 2023 | SLN +1 | NL | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — |
| 2024 | DET +1 | AL | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — |
| 2025 | DET | AL | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — |
| Career | — | — | 198 | 123 | 8 | 19 | 3 | 0 | 1 | 7 | 9 | 46 | 1 | .154 | .209 | .203 | .412 |
Fielding
1 position| Year | Team | Lg | Pos | G | GS | INN | PO | A | E | DP | TC | FLD% | RF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | SLN | NL | P | 6 | 5 | 21.1 | 1 | 3 | 0 | 0 | 4 | 1.000 | 0.67 |
| 2018 | SLN | NL | P | 28 | 28 | 151.0 | 7 | 11 | 2 | 0 | 20 | .900 | 0.64 |
| 2019 | SLN | NL | P | 33 | 33 | 196.1 | 18 | 23 | 0 | 4 | 41 | 1.000 | 1.24 |
| 2020 | SLN | NL | P | 9 | 9 | 40.1 | 1 | 4 | 0 | 0 | 5 | 1.000 | 0.56 |
| 2021 | SLN | NL | P | 17 | 15 | 78.1 | 7 | 6 | 1 | 0 | 14 | .929 | 0.76 |
| 2022 | SLN | NL | P | 9 | 8 | 36.0 | 3 | 3 | 2 | 0 | 8 | .750 | 0.67 |
| 2023 | SLN | NL | P | 29 | 27 | 144.1 | 18 | 14 | 0 | 3 | 32 | 1.000 | 1.10 |
| 2024 | DET | AL | P | 28 | 28 | 162.0 | 10 | 9 | 0 | 0 | 19 | 1.000 | 0.68 |
| 2025 | DET | AL | P | 31 | 31 | 161.0 | 15 | 14 | 0 | 1 | 29 | 1.000 | 0.94 |
| 2026 | DET | AL | P | 20 | 19 | 88.1 | 7 | 3 | 1 | 0 | 11 | .909 | 0.50 |
| Career | — | — | P | 210 | 203 | 1079.0 | 87 | 90 | 6 | 8 | 183 | .967 | 0.84 |