Since 2016, Josh Hader has struck out the most batters by a relief pitcher in a season, with 143 strikeouts in 2018.
| NAME | SO | SEASON | TM | G | W | L | W% | GS | ERA | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Hader | 143 | 2018 | 55 | 6 | 1 | .857 | 0 | 2.43 | 0 | 0 | 12 | 81.1 | 36 | 22 | 23 | 9 | 30 | 1 | 14 | 0 | 306 | 0 | 15.82 | 3.32 | 4.77 | 1.00 | 46.7 | 9.8 | 0.81 | .220 | 2.55 | 3.98 | |
| 2 | | J. Hader | 138 | 2019 | 61 | 3 | 5 | .375 | 0 | 2.62 | 0 | 0 | 37 | 75.2 | 41 | 22 | 24 | 15 | 20 | 4 | 46 | 2 | 289 | 0 | 16.41 | 2.38 | 6.90 | 1.78 | 47.8 | 6.9 | 0.81 | .232 | 2.85 | 4.88 | |
| 3 |  | C. Kimbrel | 126 | 2017 | 67 | 5 | 0 | 1.000 | 0 | 1.43 | 0 | 0 | 35 | 69.0 | 33 | 11 | 11 | 6 | 14 | 4 | 51 | 0 | 254 | 5 | 16.43 | 1.83 | 9.00 | 0.78 | 49.6 | 5.5 | 0.68 | .260 | 1.43 | 4.30 | |
| 4 |  | C. Knebel | 126 | 2017 | 76 | 1 | 4 | .200 | 0 | 1.78 | 0 | 0 | 39 | 76.0 | 48 | 15 | 15 | 6 | 40 | 2 | 48 | 5 | 309 | 2 | 14.92 | 4.74 | 3.15 | 0.71 | 40.8 | 12.9 | 1.16 | .311 | 1.78 | 5.68 | |
| 5 | | D. Betances | 126 | 2016 | 73 | 3 | 6 | .333 | 0 | 3.08 | 0 | 0 | 12 | 73.0 | 54 | 25 | 31 | 5 | 28 | 1 | 20 | 0 | 299 | 6 | 15.53 | 3.45 | 4.50 | 0.62 | 42.1 | 9.4 | 1.12 | .353 | 3.82 | 6.66 | |
| 6 |  | E. DÃaz | 124 | 2018 | 73 | 0 | 4 | .000 | 0 | 1.96 | 0 | 0 | 57 | 73.1 | 41 | 16 | 17 | 5 | 17 | 6 | 65 | 0 | 280 | 3 | 15.22 | 2.09 | 7.29 | 0.61 | 44.3 | 6.1 | 0.79 | .281 | 2.09 | 5.03 | |
| 7 | | A. Miller | 123 | 2016 | TOT | 70 | 10 | 1 | .909 | 0 | 1.45 | 0 | 0 | 12 | 74.1 | 42 | 12 | 13 | 8 | 9 | 2 | 23 | 0 | 275 | 1 | 14.89 | 1.09 | 13.67 | 0.97 | 44.7 | 3.3 | 0.69 | .256 | 1.57 | 5.09 |
| 8 | | L. Hendriks | 122 | 2019 | 73 | 4 | 4 | .500 | 0 | 1.63 | 0 | 0 | 25 | 83.0 | 58 | 15 | 16 | 5 | 19 | 2 | 41 | 5 | 322 | 7 | 13.23 | 2.06 | 6.42 | 0.54 | 37.9 | 5.9 | 0.93 | .305 | 1.73 | 6.29 | |
| 9 |  | E. DÃaz | 118 | 2022 | 61 | 3 | 1 | .750 | 0 | 1.31 | 0 | 0 | 32 | 62.0 | 34 | 9 | 9 | 3 | 18 | 2 | 49 | 1 | 235 | 2 | 17.13 | 2.61 | 6.56 | 0.44 | 50.2 | 7.7 | 0.84 | .330 | 1.31 | 4.94 | |
| 10 | | D. Betances | 115 | 2018 | 66 | 4 | 6 | .400 | 0 | 2.70 | 0 | 0 | 4 | 66.2 | 44 | 20 | 22 | 7 | 26 | 5 | 15 | 2 | 272 | 4 | 15.52 | 3.51 | 4.42 | 0.95 | 42.3 | 9.6 | 1.05 | .311 | 2.97 | 5.94 | |
| 11 | | L. Hendriks | 113 | 2021 | 69 | 8 | 3 | .727 | 0 | 2.54 | 0 | 0 | 38 | 71.0 | 45 | 20 | 23 | 11 | 7 | 1 | 58 | 1 | 267 | 6 | 14.32 | 0.89 | 16.14 | 1.39 | 42.3 | 2.6 | 0.73 | .252 | 2.92 | 5.70 | |
| 12 | | K. Barraclough | 113 | 2016 | 75 | 6 | 3 | .667 | 0 | 2.85 | 0 | 0 | 0 | 72.2 | 45 | 23 | 24 | 1 | 44 | 2 | 6 | 1 | 306 | 8 | 14.00 | 5.45 | 2.57 | 0.12 | 36.9 | 14.4 | 1.22 | .301 | 2.97 | 5.57 | |
| 13 | | A. Ottavino | 112 | 2018 | 75 | 6 | 4 | .600 | 0 | 2.43 | 0 | 0 | 6 | 77.2 | 41 | 21 | 25 | 5 | 36 | 6 | 16 | 5 | 309 | 7 | 12.98 | 4.17 | 3.11 | 0.58 | 36.2 | 11.7 | 0.99 | .240 | 2.90 | 4.75 | |
| 14 |  | B. Hand | 111 | 2016 | 82 | 4 | 4 | .500 | 0 | 2.92 | 0 | 0 | 1 | 89.1 | 63 | 29 | 32 | 8 | 36 | 1 | 16 | 4 | 364 | 7 | 11.18 | 3.63 | 3.08 | 0.81 | 30.5 | 9.9 | 1.11 | .264 | 3.22 | 6.35 | |
| 15 | | F. Bautista | 110 | 2023 | 56 | 8 | 2 | .800 | 0 | 1.48 | 0 | 0 | 33 | 61.0 | 30 | 10 | 14 | 4 | 26 | 2 | 46 | 0 | 237 | 7 | 16.23 | 3.84 | 4.23 | 0.59 | 46.4 | 11.0 | 0.92 | .274 | 2.07 | 4.43 | |
| 16 | | M. Barnes | 110 | 2019 | 70 | 5 | 4 | .556 | 0 | 3.78 | 0 | 0 | 4 | 64.1 | 51 | 27 | 29 | 8 | 38 | 2 | 14 | 2 | 285 | 13 | 15.39 | 5.32 | 2.89 | 1.12 | 38.6 | 13.3 | 1.38 | .339 | 4.06 | 7.13 | |
| 17 | | N. Anderson | 110 | 2019 | TOT | 68 | 5 | 4 | .556 | 0 | 3.32 | 0 | 0 | 1 | 65.0 | 52 | 24 | 24 | 8 | 18 | 2 | 3 | 4 | 264 | 4 | 15.23 | 2.49 | 6.11 | 1.11 | 41.7 | 6.8 | 1.08 | .349 | 3.32 | 7.20 |
| 18 |  | K. Jansen | 109 | 2017 | 65 | 5 | 0 | 1.000 | 0 | 1.32 | 0 | 0 | 41 | 68.1 | 44 | 10 | 11 | 5 | 7 | 2 | 57 | 0 | 258 | 2 | 14.36 | 0.92 | 15.57 | 0.66 | 42.2 | 2.7 | 0.75 | .289 | 1.45 | 5.80 | |
| 19 | | J. Estrada | 108 | 2025 | 77 | 4 | 5 | .444 | 0 | 3.45 | 0 | 0 | 3 | 73.0 | 58 | 28 | 31 | 12 | 27 | 3 | 7 | 2 | 304 | 3 | 13.32 | 3.33 | 4.00 | 1.48 | 35.5 | 8.9 | 1.16 | .299 | 3.82 | 7.15 | |
| 20 | | M. Brash | 107 | 2023 | 78 | 9 | 4 | .692 | 0 | 3.06 | 0 | 0 | 4 | 70.2 | 65 | 24 | 26 | 3 | 29 | 6 | 7 | 0 | 308 | 11 | 13.63 | 3.69 | 3.69 | 0.38 | 34.7 | 9.4 | 1.33 | .380 | 3.31 | 8.28 | |
| 21 | | L. Jackson | 106 | 2019 | 70 | 9 | 2 | .818 | 0 | 3.84 | 0 | 0 | 18 | 72.2 | 76 | 31 | 34 | 10 | 26 | 2 | 35 | 4 | 315 | 3 | 13.13 | 3.22 | 4.08 | 1.24 | 33.7 | 8.3 | 1.40 | .386 | 4.21 | 9.41 | |
| 22 | | R. Yarbrough | 106 | 2018 | 32 | 14 | 4 | .778 | 0 | 3.72 | 0 | 0 | 0 | 118.2 | 110 | 49 | 52 | 15 | 42 | 6 | 3 | 5 | 505 | 0 | 8.04 | 3.19 | 2.52 | 1.14 | 21.0 | 8.3 | 1.28 | .283 | 3.94 | 8.34 | |
| 23 | | B. Hand | 106 | 2018 | TOT | 69 | 2 | 5 | .286 | 0 | 2.75 | 0 | 0 | 32 | 72.0 | 52 | 22 | 28 | 8 | 28 | 9 | 42 | 2 | 301 | 2 | 13.25 | 3.50 | 3.79 | 1.00 | 35.2 | 9.3 | 1.11 | .293 | 3.50 | 6.50 |
| 24 | | B. Abreu | 105 | 2025 | 70 | 3 | 4 | .429 | 0 | 2.28 | 0 | 0 | 7 | 71.0 | 51 | 18 | 18 | 4 | 31 | 4 | 19 | 0 | 296 | 4 | 13.31 | 3.93 | 3.39 | 0.51 | 35.5 | 10.5 | 1.15 | .309 | 2.28 | 6.46 | |
| 25 |  | J. Hader | 105 | 2024 | 71 | 8 | 8 | .500 | 0 | 3.80 | 0 | 0 | 34 | 71.0 | 43 | 30 | 33 | 12 | 25 | 1 | 62 | 0 | 278 | 4 | 13.31 | 3.17 | 4.20 | 1.52 | 37.8 | 9.0 | 0.96 | .230 | 4.18 | 5.45 | |
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HOUStatMuse has game-level data for strikeouts going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
39 | 19 | .672 | ||
29 | 28 | .509 | 9.5 | |
29 | 29 | .500 | 10.0 | |
26 | 32 | .448 | 13.0 | |
24 | 33 | .421 | 14.5 | |
| NL Central | W | L | PCT | GB |
34 | 20 | .630 | ||
30 | 25 | .545 | 4.5 | |
31 | 27 | .534 | 5.0 | |
29 | 27 | .518 | 6.0 | |
30 | 28 | .517 | 6.0 | |
| NL West | W | L | PCT | GB |
37 | 20 | .649 | ||
32 | 24 | .571 | 4.5 | |
31 | 25 | .554 | 5.5 | |
22 | 35 | .386 | 15.0 | |
21 | 37 | .362 | 16.5 |
Phillies
Nationals
Marlins
Diamondbacks| AL East | W | L | PCT | GB |
|---|---|---|---|---|
35 | 19 | .648 | ||
35 | 22 | .614 | 1.5 | |
29 | 29 | .500 | 8.0 | |
26 | 32 | .448 | 11.0 | |
23 | 33 | .411 | 13.0 | |
| AL Central | W | L | PCT | GB |
34 | 25 | .576 | ||
30 | 27 | .526 | 3.0 | |
27 | 31 | .466 | 6.5 | |
22 | 35 | .386 | 11.0 | |
22 | 36 | .379 | 11.5 | |
| AL West | W | L | PCT | GB |
29 | 29 | .500 | ||
27 | 30 | .474 | 1.5 | |
26 | 31 | .456 | 2.5 | |
26 | 33 | .441 | 3.5 | |
22 | 36 | .379 | 7.0 |
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