Rafael Martin has the best K/9 with 8.0+ innings pitched in a season, with 18.24 per nine innings in his rookie season in 2015.
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| NAME | K/9 | IP | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | R. Martin | 18.24 | 12.1 | 2015 | 13 | 2 | 0 | 1.000 | 0 | 5.11 | 25 | 0 | 0 | 0 | 12 | 7 | 9 | 4 | 5 | 1 | 5 | 0 | 56 | 0 | 3.65 | 5.00 | 2.92 | 44.6 | 8.9 | 1.38 | .381 | 6.57 | 130 | 4.75 | 124 | 8.76 | -1.3 | |
| 2 | | D. Williams | 17.67 | 27.0 | 2020 | 22 | 4 | 1 | .800 | 0 | 0.33 | 53 | 0 | 0 | 0 | 8 | 1 | 4 | 1 | 9 | 1 | 1 | 0 | 100 | 3 | 3.00 | 5.89 | 0.33 | 53.0 | 9.0 | 0.63 | .194 | 1.33 | 7 | 0.85 | 19 | 2.67 | 10.8 | |
| 3 | | J. Karinchak | 17.67 | 27.0 | 2020 | 27 | 1 | 2 | .333 | 0 | 2.67 | 53 | 0 | 0 | 1 | 14 | 8 | 9 | 1 | 16 | 0 | 4 | 1 | 109 | 5 | 5.33 | 3.31 | 0.33 | 48.6 | 14.7 | 1.11 | .333 | 3.00 | 60 | 1.52 | 34 | 4.67 | 8.8 | |
| 4 |  | A. Chapman | 17.67 | 54.0 | 2014 | 54 | 0 | 3 | .000 | 0 | 2.00 | 106 | 0 | 0 | 36 | 21 | 12 | 12 | 1 | 24 | 2 | 44 | 0 | 202 | 4 | 4.00 | 4.42 | 0.17 | 52.5 | 11.9 | 0.83 | .290 | 2.00 | 54 | 0.89 | 23 | 3.50 | 17 | |
| 5 | | N. Burdi | 17.65 | 8.2 | 2019 | 11 | 2 | 1 | .667 | 0 | 9.35 | 17 | 0 | 0 | 0 | 11 | 9 | 9 | 1 | 3 | 0 | 3 | 0 | 40 | 1 | 3.12 | 5.67 | 1.04 | 42.5 | 7.5 | 1.62 | .526 | 9.35 | 215 | 1.82 | 41 | 11.42 | 2.5 | |
| 6 |  | E. DÃaz | 17.53 | 25.2 | 2020 | 26 | 2 | 1 | .667 | 0 | 1.75 | 50 | 0 | 0 | 6 | 18 | 5 | 6 | 2 | 14 | 2 | 19 | 0 | 110 | 1 | 4.91 | 3.57 | 0.70 | 45.5 | 12.7 | 1.25 | .381 | 2.10 | 42 | 2.17 | 50 | 6.31 | 6.3 | |
| 7 |  | C. Kimbrel | 17.42 | 20.2 | 2010 | 21 | 4 | 0 | 1.000 | 0 | 0.44 | 40 | 0 | 0 | 1 | 9 | 1 | 2 | 0 | 16 | 0 | 7 | 1 | 88 | 4 | 6.97 | 2.50 | 0.00 | 45.5 | 18.2 | 1.21 | .281 | 0.87 | 11 | 1.52 | 39 | 3.92 | 5.6 | |
| 8 | | S. Reynolds | 17.18 | 11.0 | 2024 | 9 | 0 | 0 | 0 | 0.82 | 21 | 0 | 0 | 0 | 10 | 1 | 1 | 0 | 5 | 1 | 3 | 0 | 49 | 0 | 4.09 | 4.20 | 0.00 | 42.9 | 10.2 | 1.36 | .455 | 0.82 | 21 | 0.98 | 24 | 8.18 | 3.7 | ||
| 9 | | E. DÃaz | 17.13 | 62.0 | 2022 | 61 | 3 | 1 | .750 | 0 | 1.31 | 118 | 0 | 0 | 32 | 34 | 9 | 9 | 3 | 18 | 2 | 49 | 1 | 235 | 2 | 2.61 | 6.56 | 0.44 | 50.2 | 7.7 | 0.84 | .330 | 1.31 | 34 | 0.90 | 23 | 4.94 | 21.2 | |
| 10 |  | A. Chapman | 16.97 | 11.2 | 2020 | 13 | 1 | 1 | .500 | 0 | 3.09 | 22 | 0 | 0 | 3 | 6 | 4 | 4 | 2 | 4 | 1 | 8 | 0 | 45 | 0 | 3.09 | 5.50 | 1.54 | 48.9 | 8.9 | 0.86 | .250 | 3.09 | 70 | 2.92 | 65 | 4.63 | 2 | |
| 11 | | D. Hernandez | 16.91 | 30.1 | 2019 | 29 | 0 | 1 | .000 | 1 | 4.45 | 57 | 0 | 0 | 0 | 27 | 15 | 18 | 1 | 26 | 3 | 2 | 1 | 147 | 4 | 7.71 | 2.19 | 0.30 | 38.8 | 17.7 | 1.75 | .433 | 5.34 | 92 | 2.74 | 61 | 8.01 | 6 | |
| 12 | | C. Capps | 16.84 | 31.0 | 2015 | 30 | 1 | 0 | 1.000 | 0 | 1.16 | 58 | 0 | 0 | 0 | 18 | 4 | 5 | 2 | 7 | 2 | 8 | 0 | 118 | 2 | 2.03 | 8.29 | 0.58 | 49.2 | 5.9 | 0.81 | .327 | 1.45 | 31 | 1.09 | 29 | 5.23 | 9.4 | |
| 13 | | C. Kimbrel | 16.66 | 62.2 | 2012 | 63 | 3 | 1 | .750 | 0 | 1.01 | 116 | 0 | 0 | 42 | 27 | 7 | 7 | 3 | 14 | 2 | 56 | 0 | 231 | 5 | 2.01 | 8.29 | 0.43 | 50.2 | 6.1 | 0.65 | .250 | 1.01 | 26 | 0.77 | 20 | 3.88 | 21.6 | |
| 14 |  | M. Miller | 16.59 | 70.0 | 2026 | 66 | 5 | 2 | .714 | 0 | 1.67 | 129 | 0 | 0 | 38 | 37 | 13 | 16 | 3 | 26 | 2 | 57 | 1 | 272 | 6 | 3.34 | 4.96 | 0.39 | 47.4 | 9.6 | 0.90 | .304 | 2.06 | 41 | 1.16 | 28 | 4.76 | 23.7 | |
| 15 |  | C. Kimbrel | 16.43 | 15.1 | 2020 | 18 | 0 | 1 | .000 | 0 | 5.28 | 28 | 0 | 0 | 2 | 10 | 9 | 9 | 2 | 12 | 2 | 11 | 1 | 69 | 4 | 7.04 | 2.33 | 1.17 | 40.6 | 17.4 | 1.43 | .320 | 5.28 | 119 | 3.96 | 90 | 5.87 | 0.7 | |
| 16 |  | C. Kimbrel | 16.43 | 69.0 | 2017 | 67 | 5 | 0 | 1.000 | 0 | 1.43 | 126 | 0 | 0 | 35 | 33 | 11 | 11 | 6 | 14 | 4 | 51 | 0 | 254 | 5 | 1.83 | 9.00 | 0.78 | 49.6 | 5.5 | 0.68 | .260 | 1.43 | 31 | 1.41 | 32 | 4.30 | 22.7 | |
| 17 |  | J. Hader | 16.41 | 75.2 | 2019 | 61 | 3 | 5 | .375 | 0 | 2.62 | 138 | 0 | 0 | 37 | 41 | 22 | 24 | 15 | 20 | 4 | 46 | 2 | 289 | 0 | 2.38 | 6.90 | 1.78 | 47.8 | 6.9 | 0.81 | .232 | 2.85 | 59 | 3.08 | 70 | 4.88 | 11.3 | |
| 18 | | A. Chapman | 16.31 | 51.1 | 2018 | 55 | 3 | 0 | 1.000 | 0 | 2.45 | 93 | 0 | 0 | 32 | 24 | 14 | 15 | 2 | 30 | 5 | 43 | 0 | 212 | 9 | 5.26 | 3.10 | 0.35 | 43.9 | 14.2 | 1.05 | .268 | 2.63 | 58 | 2.08 | 48 | 4.21 | 12.5 | |
| 19 | | F. Bautista | 16.23 | 61.0 | 2023 | 56 | 8 | 2 | .800 | 0 | 1.48 | 110 | 0 | 0 | 33 | 30 | 10 | 14 | 4 | 26 | 2 | 46 | 0 | 237 | 7 | 3.84 | 4.23 | 0.59 | 46.4 | 11.0 | 0.92 | .274 | 2.07 | 35 | 1.87 | 45 | 4.43 | 16 | |
| 20 | | J. De León | 16.20 | 18.1 | 2021 | 9 | 0 | 1 | .000 | 2 | 8.35 | 33 | 0 | 0 | 0 | 22 | 17 | 17 | 4 | 11 | 2 | 1 | 0 | 91 | 3 | 5.40 | 3.00 | 1.96 | 36.3 | 12.1 | 1.80 | .439 | 8.35 | 189 | 4.53 | 102 | 10.80 | -0.1 | |
| 21 |  | K. Jansen | 16.10 | 53.2 | 2011 | 51 | 2 | 1 | .667 | 0 | 2.85 | 96 | 0 | 0 | 5 | 30 | 17 | 17 | 3 | 26 | 2 | 13 | 0 | 218 | 0 | 4.36 | 3.69 | 0.50 | 44.0 | 11.9 | 1.04 | .297 | 2.85 | 79 | 1.73 | 46 | 5.03 | 12.5 | |
| 22 | | J. Adam | 16.03 | 10.2 | 2021 | 12 | 1 | 0 | 1.000 | 0 | 5.91 | 19 | 0 | 0 | 0 | 10 | 7 | 7 | 1 | 6 | 3 | 4 | 0 | 50 | 0 | 5.06 | 3.17 | 0.84 | 38.0 | 12.0 | 1.50 | .429 | 5.91 | 142 | 3.35 | 80 | 8.44 | 1 | |
| 23 | | D. Zamora | 16.00 | 9.0 | 2018 | 16 | 1 | 0 | 1.000 | 0 | 3.00 | 16 | 0 | 0 | 0 | 6 | 3 | 3 | 1 | 3 | 1 | 4 | 1 | 36 | 0 | 3.00 | 5.33 | 1.00 | 44.4 | 8.3 | 1.00 | .333 | 3.00 | 78 | 2.38 | 60 | 6.00 | 1.6 | |
| 24 | | C. Marmol | 15.99 | 77.2 | 2010 | 77 | 2 | 3 | .400 | 0 | 2.55 | 138 | 0 | 0 | 38 | 40 | 22 | 23 | 1 | 52 | 8 | 70 | 4 | 332 | 2 | 6.03 | 2.65 | 0.12 | 41.6 | 15.7 | 1.18 | .293 | 2.67 | 62 | 2.00 | 50 | 4.64 | 17.4 | |
| 25 |  | A. Chapman | 15.89 | 58.1 | 2023 | TOT | 61 | 6 | 5 | .545 | 0 | 3.09 | 103 | 0 | 0 | 6 | 37 | 20 | 24 | 4 | 36 | 1 | 18 | 2 | 249 | 9 | 5.55 | 2.86 | 0.62 | 41.4 | 14.5 | 1.25 | .314 | 3.70 | 71 | 2.51 | 58 | 5.71 | 11.7 |
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
 Braves - y | 94 | 68 | .580 | |
 Phillies - w | 88 | 74 | .543 | 6.0 |
80 | 82 | .494 | 14.0 | |
77 | 85 | .475 | 17.0 | |
74 | 88 | .457 | 20.0 | |
| NL Central | W | L | PCT | GB |
 Brewers - y | 103 | 59 | .636 | |
 Cubs - w | 89 | 73 | .549 | 14.0 |
82 | 80 | .506 | 21.0 | |
77 | 85 | .475 | 26.0 | |
75 | 87 | .463 | 28.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 100 | 62 | .617 | |
 Padres - w | 91 | 71 | .562 | 9.0 |
86 | 76 | .531 | 14.0 | |
65 | 97 | .401 | 35.0 | |
58 | 104 | .358 | 42.0 |
Cardinals
Diamondbacks
Giants
Rockies| AL East | W | L | PCT | GB |
|---|---|---|---|---|
 Rays - y | 98 | 64 | .605 | |
 Yankees - w | 93 | 68 | .578 | 4.5 |
 Red Sox - w | 87 | 75 | .537 | 11.0 |
79 | 82 | .491 | 18.5 | |
79 | 83 | .488 | 19.0 | |
| AL Central | W | L | PCT | GB |
 Guardians - y | 85 | 77 | .525 | |
 White Sox - w | 84 | 78 | .519 | 1.0 |
77 | 85 | .475 | 8.0 | |
76 | 86 | .469 | 9.0 | |
69 | 93 | .426 | 16.0 | |
| AL West | W | L | PCT | GB |
 Astros - y | 81 | 81 | .500 | |
80 | 82 | .494 | 1.0 | |
76 | 86 | .469 | 5.0 | |
64 | 98 | .395 | 17.0 | |
62 | 100 | .383 | 19.0 |
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