Juan Mejia and Sam Moll are tied for the highest career K/9 by an active starting pitcher, with 27.00 per nine innings.
| NAME | K/9 | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Mejia | 27.00 | 1 | 0 | 0 | 1 | 27.00 | 2 | 0 | 0 | 0 | 0.2 | 3 | 2 | 2 | 0 | 0 | 1 | 0 | 0 | 6 | 1 | 0.00 | 0.00 | 33.3 | 0.0 | 4.50 | 1.000 | 27.00 | 40.50 | ||
| 2 | | S. Moll | 27.00 | 1 | 0 | 0 | 1 | 0.00 | 3 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0.00 | 0.00 | 75.0 | 0.0 | 1.00 | 1.000 | 0.00 | 9.00 | ||
| 3 | | P. Maton | 20.25 | 1 | 0 | 0 | 1 | 6.75 | 3 | 0 | 0 | 0 | 1.1 | 2 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 7 | 0 | 6.75 | 3.00 | 0.00 | 42.9 | 14.3 | 2.25 | .667 | 6.75 | 13.50 | |
| 4 | | F. Cruz | 18.24 | 7 | 0 | 1 | .000 | 7 | 2.92 | 25 | 0 | 0 | 0 | 12.1 | 6 | 4 | 5 | 2 | 2 | 1 | 0 | 0 | 47 | 0 | 1.46 | 12.50 | 1.46 | 53.2 | 4.3 | 0.65 | .235 | 3.65 | 4.38 |
| 5 | | J. Morán | 18.00 | 3 | 0 | 2 | .000 | 3 | 15.00 | 6 | 0 | 0 | 0 | 3.0 | 7 | 5 | 5 | 2 | 2 | 0 | 0 | 0 | 18 | 0 | 6.00 | 3.00 | 6.00 | 33.3 | 11.1 | 3.00 | .625 | 15.00 | 21.00 |
| 6 | | R. Garrett | 18.00 | 1 | 0 | 0 | 1 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0.00 | 0.00 | 66.7 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 7 | | R. Zeferjahn | 18.00 | 1 | 0 | 0 | 1 | 9.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 4 | 0 | 0.00 | 9.00 | 50.0 | 0.0 | 1.00 | .000 | 9.00 | 9.00 | ||
| 8 | | A. Vesia | 18.00 | 1 | 0 | 0 | 1 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0.00 | 0.00 | 50.0 | 0.0 | 1.00 | .500 | 0.00 | 9.00 | ||
| 9 | | S. Wilson | 18.00 | 1 | 0 | 0 | 1 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0.00 | 0.00 | 66.7 | 0.0 | 0.00 | .000 | 0.00 | 0.00 | ||
| 10 | | P. Johnson | 18.00 | 2 | 0 | 1 | .000 | 2 | 4.50 | 4 | 0 | 0 | 0 | 2.0 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 10 | 0 | 4.50 | 4.00 | 4.50 | 40.0 | 10.0 | 1.50 | .333 | 4.50 | 9.00 |
| 11 | | R. RodrÃguez | 16.88 | 1 | 0 | 0 | 1 | 3.38 | 5 | 0 | 0 | 0 | 2.2 | 1 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 11 | 0 | 6.75 | 2.50 | 0.00 | 45.5 | 18.2 | 1.13 | .250 | 3.38 | 3.38 | |
| 12 | | M. Montgomery | 15.75 | 4 | 0 | 0 | 4 | 0.00 | 7 | 0 | 0 | 0 | 4.0 | 3 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 17 | 0 | 4.50 | 3.50 | 0.00 | 41.2 | 11.8 | 1.25 | .375 | 0.00 | 6.75 | |
| 13 | | R. Walker | 14.34 | 14 | 0 | 1 | .000 | 14 | 2.11 | 34 | 0 | 0 | 0 | 21.1 | 20 | 5 | 6 | 3 | 12 | 2 | 0 | 0 | 94 | 1 | 5.06 | 2.83 | 1.27 | 36.2 | 12.8 | 1.50 | .395 | 2.53 | 8.44 |
| 14 | | B. Graterol | 14.21 | 5 | 0 | 0 | 5 | 7.11 | 10 | 0 | 0 | 0 | 6.1 | 7 | 5 | 5 | 1 | 2 | 0 | 0 | 0 | 27 | 0 | 2.84 | 5.00 | 1.42 | 37.0 | 7.4 | 1.42 | .429 | 7.11 | 9.95 | |
| 15 | | B. Joyce | 13.50 | 1 | 0 | 0 | 1 | 0.00 | 3 | 0 | 0 | 0 | 2.0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 9 | 0 | 4.50 | 3.00 | 0.00 | 33.3 | 11.1 | 1.00 | .250 | 0.00 | 4.50 | |
| 16 | | T. Megill | 13.50 | 2 | 0 | 0 | 2 | 9.00 | 3 | 0 | 0 | 0 | 2.0 | 4 | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 11 | 0 | 4.50 | 3.00 | 0.00 | 27.3 | 9.1 | 2.50 | .571 | 9.00 | 18.00 | |
| 17 | | D. Santana | 13.50 | 1 | 0 | 1 | .000 | 1 | 4.50 | 3 | 0 | 0 | 0 | 2.0 | 1 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 9 | 0 | 9.00 | 1.50 | 0.00 | 33.3 | 22.2 | 1.50 | .250 | 4.50 | 4.50 |
| 18 | | R. O'Brien | 13.50 | 1 | 0 | 1 | .000 | 1 | 13.50 | 2 | 0 | 0 | 0 | 1.1 | 2 | 2 | 2 | 2 | 3 | 0 | 0 | 0 | 9 | 0 | 20.25 | 0.67 | 13.50 | 22.2 | 33.3 | 3.75 | .000 | 13.50 | 13.50 |
| 19 | | D. Coulombe | 13.50 | 2 | 0 | 0 | 2 | 6.75 | 4 | 0 | 0 | 0 | 2.2 | 4 | 2 | 4 | 2 | 0 | 0 | 0 | 0 | 13 | 0 | 0.00 | 6.75 | 30.8 | 0.0 | 1.50 | .286 | 13.50 | 13.50 | ||
| 20 |  | J. Misiorowski | 12.84 | 28 | 13 | 5 | .722 | 28 | 2.63 | 215 | 1 | 1 | 0 | 150.2 | 90 | 44 | 48 | 12 | 50 | 10 | 0 | 0 | 589 | 4 | 2.99 | 4.30 | 0.72 | 36.5 | 8.5 | 0.93 | .258 | 2.87 | 5.38 |
| 21 | | B. Fisher | 12.71 | 5 | 0 | 0 | 5 | 7.94 | 8 | 0 | 0 | 0 | 5.2 | 7 | 5 | 5 | 2 | 3 | 0 | 0 | 0 | 27 | 0 | 4.76 | 2.67 | 3.18 | 29.6 | 11.1 | 1.76 | .357 | 7.94 | 11.12 | |
| 22 | | T. Nance | 12.60 | 2 | 0 | 1 | .000 | 2 | 1.80 | 7 | 0 | 0 | 0 | 5.0 | 4 | 1 | 1 | 1 | 3 | 0 | 0 | 0 | 22 | 0 | 5.40 | 2.33 | 1.80 | 31.8 | 13.6 | 1.40 | .273 | 1.80 | 7.20 |
| 23 | | B. Bernardino | 12.46 | 14 | 0 | 2 | .000 | 14 | 3.12 | 24 | 0 | 0 | 0 | 17.1 | 15 | 6 | 7 | 1 | 8 | 4 | 0 | 0 | 77 | 2 | 4.15 | 3.00 | 0.52 | 31.2 | 10.4 | 1.33 | .350 | 3.63 | 7.79 |
| 24 | | AJ Blubaugh | 12.27 | 3 | 0 | 1 | .000 | 3 | 1.64 | 15 | 0 | 0 | 0 | 11.0 | 8 | 2 | 7 | 2 | 6 | 0 | 0 | 0 | 47 | 0 | 4.91 | 2.50 | 1.64 | 31.9 | 12.8 | 1.27 | .250 | 5.73 | 6.55 |
| 25 | | P. Fairbanks | 12.27 | 3 | 0 | 0 | 3 | 7.36 | 5 | 0 | 0 | 0 | 3.2 | 4 | 3 | 3 | 1 | 2 | 0 | 0 | 0 | 16 | 0 | 4.91 | 2.50 | 2.45 | 31.3 | 12.5 | 1.64 | .375 | 7.36 | 9.82 | |
StatMuse has game-level data for K/9 going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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46 | 27 | .630 | ||
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46 | 25 | .648 | ||
39 | 33 | .542 | 7.5 | |
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