Mason Miller has the best K/9 by a relief pitcher with 30.0+ innings pitched this season, with 16.34 per nine innings.
Interpreted as:
most strikeouts per 9 innings in MLB relievers minimum 30 innings pitched this regular season| 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 | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | M. Miller | 16.34 | 39.2 | 2026 | 38 | 2 | 1 | .667 | 0 | 0.91 | 72 | 0 | 0 | 25 | 18 | 4 | 6 | 0 | 13 | 1 | 34 | 0 | 149 | 3 | 2.95 | 5.54 | 0.00 | 48.3 | 8.7 | 0.78 | .286 | 1.36 | 4.08 | |
| 2 |  | J. Hoffman | 13.94 | 41.1 | 2026 | 44 | 5 | 6 | .455 | 0 | 4.57 | 64 | 0 | 0 | 5 | 43 | 21 | 25 | 4 | 15 | 4 | 16 | 4 | 184 | 3 | 3.27 | 4.27 | 0.87 | 34.8 | 8.2 | 1.40 | .402 | 5.44 | 9.36 | |
| 3 |  | J. Duran | 13.78 | 32.2 | 2026 | 34 | 1 | 3 | .250 | 0 | 1.38 | 50 | 0 | 0 | 24 | 24 | 5 | 6 | 1 | 6 | 1 | 33 | 0 | 126 | 2 | 1.65 | 8.33 | 0.28 | 39.7 | 4.8 | 0.92 | .338 | 1.65 | 6.61 | |
| 4 |  | A. Muñoz | 13.37 | 34.1 | 2026 | 37 | 3 | 4 | .429 | 0 | 4.19 | 51 | 0 | 0 | 16 | 29 | 16 | 17 | 4 | 15 | 1 | 28 | 0 | 148 | 1 | 3.93 | 3.40 | 1.05 | 34.5 | 10.1 | 1.28 | .325 | 4.46 | 7.60 | |
| 5 | | M. Montgomery | 13.09 | 33.0 | 2026 | 34 | 2 | 3 | .400 | 0 | 4.64 | 48 | 0 | 0 | 1 | 28 | 17 | 18 | 4 | 15 | 0 | 7 | 0 | 141 | 2 | 4.09 | 3.20 | 1.09 | 34.0 | 10.6 | 1.30 | .324 | 4.91 | 7.64 | |
| 6 | | G. Taylor | 12.88 | 43.1 | 2026 | 32 | 4 | 2 | .667 | 0 | 3.12 | 62 | 0 | 0 | 4 | 35 | 15 | 20 | 4 | 17 | 0 | 10 | 0 | 182 | 3 | 3.53 | 3.65 | 0.83 | 34.1 | 9.3 | 1.20 | .313 | 4.15 | 7.27 | |
| 7 | | J. Alvarado | 12.82 | 33.0 | 2026 | 39 | 3 | 3 | .500 | 0 | 6.82 | 47 | 0 | 0 | 1 | 43 | 25 | 26 | 3 | 14 | 6 | 3 | 2 | 161 | 3 | 3.82 | 3.36 | 0.82 | 29.2 | 8.7 | 1.73 | .440 | 7.09 | 11.73 | |
| 8 | | A. Vesia | 12.79 | 31.2 | 2026 | 42 | 1 | 1 | .500 | 0 | 2.27 | 45 | 0 | 0 | 3 | 16 | 8 | 8 | 0 | 20 | 0 | 6 | 2 | 133 | 0 | 5.68 | 2.25 | 0.00 | 33.8 | 15.0 | 1.14 | .235 | 2.27 | 4.55 | |
| 9 |  | C. Smith | 12.79 | 44.1 | 2026 | 42 | 2 | 1 | .667 | 0 | 2.84 | 63 | 0 | 0 | 28 | 38 | 14 | 17 | 4 | 11 | 1 | 36 | 1 | 181 | 5 | 2.23 | 5.73 | 0.81 | 34.8 | 6.1 | 1.11 | .333 | 3.45 | 7.71 | |
| 10 | | D. Williams | 12.51 | 31.2 | 2026 | 35 | 3 | 2 | .600 | 0 | 4.83 | 44 | 0 | 0 | 13 | 35 | 17 | 22 | 3 | 19 | 0 | 23 | 1 | 149 | 1 | 5.40 | 2.32 | 0.85 | 29.5 | 12.8 | 1.71 | .386 | 6.25 | 9.95 | |
| 11 | | R. Zeferjahn | 12.48 | 44.0 | 2026 | 38 | 4 | 3 | .571 | 0 | 3.89 | 61 | 0 | 0 | 2 | 23 | 19 | 21 | 4 | 31 | 7 | 14 | 3 | 192 | 1 | 6.34 | 1.97 | 0.82 | 31.8 | 16.1 | 1.23 | .213 | 4.30 | 4.70 | |
| 12 |  | L. Varland | 12.31 | 49.0 | 2026 | 44 | 3 | 3 | .500 | 0 | 1.10 | 67 | 0 | 0 | 19 | 35 | 6 | 11 | 1 | 13 | 0 | 30 | 1 | 190 | 3 | 2.39 | 5.15 | 0.18 | 35.3 | 6.8 | 0.98 | .312 | 2.02 | 6.43 | |
| 13 | | H. Harris | 12.00 | 42.0 | 2026 | 45 | 3 | 0 | 1.000 | 0 | 3.43 | 56 | 0 | 0 | 6 | 38 | 16 | 17 | 5 | 27 | 4 | 12 | 2 | 193 | 0 | 5.79 | 2.07 | 1.07 | 29.0 | 14.0 | 1.55 | .327 | 3.64 | 8.14 | |
| 14 | | A. Ashby | 11.98 | 53.1 | 2026 | 44 | 12 | 2 | .857 | 0 | 3.38 | 71 | 0 | 0 | 0 | 48 | 20 | 24 | 5 | 29 | 2 | 5 | 1 | 235 | 5 | 4.89 | 2.45 | 0.84 | 30.2 | 12.3 | 1.44 | .336 | 4.05 | 8.10 | |
| 15 | | T. Scott | 11.64 | 38.2 | 2026 | 41 | 1 | 3 | .250 | 0 | 2.56 | 50 | 0 | 0 | 13 | 25 | 11 | 11 | 4 | 5 | 1 | 20 | 1 | 144 | 1 | 1.16 | 10.00 | 0.93 | 34.7 | 3.5 | 0.78 | .250 | 2.56 | 5.82 | |
| 16 | | B. Abreu | 11.61 | 31.0 | 2026 | 34 | 2 | 3 | .400 | 0 | 5.81 | 40 | 0 | 0 | 5 | 26 | 20 | 22 | 7 | 26 | 3 | 21 | 0 | 142 | 4 | 7.55 | 1.54 | 2.03 | 28.2 | 18.3 | 1.68 | .288 | 6.39 | 7.55 | |
| 17 | | T. Megill | 11.50 | 36.0 | 2026 | 37 | 2 | 2 | .500 | 0 | 3.00 | 46 | 0 | 0 | 14 | 25 | 12 | 13 | 0 | 10 | 1 | 20 | 1 | 145 | 3 | 2.50 | 4.60 | 0.00 | 31.7 | 6.9 | 0.97 | .284 | 3.25 | 6.25 | |
| 18 | | C. Silseth | 11.36 | 35.2 | 2026 | 42 | 3 | 1 | .750 | 0 | 3.03 | 45 | 0 | 0 | 0 | 30 | 12 | 13 | 3 | 20 | 1 | 7 | 1 | 156 | 5 | 5.05 | 2.25 | 0.76 | 28.8 | 12.8 | 1.40 | .310 | 3.28 | 7.57 | |
| 19 | | J. Lawrence | 11.27 | 34.1 | 2026 | TOT | 37 | 0 | 3 | .000 | 0 | 7.34 | 43 | 0 | 0 | 1 | 39 | 28 | 35 | 9 | 28 | 6 | 13 | 1 | 177 | 3 | 7.34 | 1.54 | 2.36 | 24.3 | 15.8 | 1.95 | .330 | 9.17 | 10.22 |
| 20 | | F. Cruz | 11.25 | 40.0 | 2026 | 44 | 4 | 3 | .571 | 0 | 2.25 | 50 | 0 | 0 | 1 | 27 | 10 | 12 | 2 | 22 | 2 | 4 | 1 | 167 | 3 | 4.95 | 2.27 | 0.45 | 29.9 | 13.2 | 1.23 | .275 | 2.70 | 6.08 | |
| 21 | | J. Bowlan | 11.15 | 30.2 | 2026 | 33 | 2 | 0 | 1.000 | 0 | 2.93 | 38 | 0 | 0 | 0 | 26 | 10 | 12 | 2 | 7 | 2 | 2 | 0 | 125 | 0 | 2.05 | 5.43 | 0.59 | 30.4 | 5.6 | 1.08 | .316 | 3.52 | 7.63 | |
| 22 | | C. Kilian | 11.13 | 38.0 | 2026 | 38 | 2 | 5 | .286 | 0 | 4.74 | 47 | 0 | 0 | 8 | 35 | 20 | 22 | 5 | 18 | 1 | 19 | 2 | 167 | 1 | 4.26 | 2.61 | 1.18 | 28.1 | 10.8 | 1.39 | .313 | 5.21 | 8.29 | |
| 23 | | D. Lee | 11.09 | 43.0 | 2026 | 44 | 4 | 0 | 1.000 | 0 | 1.47 | 53 | 0 | 0 | 0 | 21 | 7 | 8 | 1 | 7 | 0 | 1 | 0 | 156 | 0 | 1.47 | 7.57 | 0.21 | 34.0 | 4.5 | 0.65 | .211 | 1.67 | 4.40 | |
| 24 | | S. DomÃnguez | 11.02 | 32.2 | 2026 | 36 | 3 | 3 | .500 | 0 | 4.41 | 40 | 0 | 0 | 12 | 24 | 16 | 19 | 5 | 20 | 2 | 18 | 1 | 142 | 5 | 5.51 | 2.00 | 1.38 | 28.2 | 14.1 | 1.35 | .253 | 5.23 | 6.61 | |
| 25 | | L. Medina | 10.89 | 41.1 | 2026 | 30 | 1 | 1 | .500 | 0 | 3.70 | 50 | 0 | 0 | 0 | 38 | 17 | 21 | 4 | 22 | 3 | 9 | 1 | 183 | 2 | 4.79 | 2.27 | 0.87 | 27.3 | 12.0 | 1.45 | .327 | 4.57 | 8.27 | |
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ATLStatMuse has game-level data for K/9 and innings pitched going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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Team Pitching Leaders 
W
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2026 Division Standings
| TEAM | W | L | PCT | GB |
|---|---|---|---|---|
61 | 36 | .629 | ||
49 | 47 | .510 | 11.5 | |
 Padres | 48 | 48 | .500 | 12.5 |
41 | 55 | .427 | 19.5 | |
39 | 59 | .398 | 22.5 |
Diamondbacks
Rockies
KCR
MLB 2026 Batting Leaders
MLB 2026 Pitching Leaders
MLB Fantasy 2026
MLB 2026 Betting
MLB 2026 Standings
| NL East | W | L | PCT | GB |
|---|---|---|---|---|
55 | 40 | .579 | ||
54 | 43 | .557 | 2.0 | |
52 | 45 | .536 | 4.0 | |
48 | 49 | .495 | 8.0 | |
40 | 57 | .412 | 16.0 | |
| NL Central | W | L | PCT | GB |
59 | 37 | .615 | ||
54 | 42 | .563 | 5.0 | |
50 | 45 | .526 | 8.5 | |
50 | 47 | .515 | 9.5 | |
43 | 52 | .453 | 15.5 | |
| NL West | W | L | PCT | GB |
61 | 36 | .629 | ||
49 | 47 | .510 | 11.5 | |
48 | 48 | .500 | 12.5 | |
41 | 55 | .427 | 19.5 | |
39 | 59 | .398 | 22.5 |
Marlins
Nationals
Cubs
Cardinals
Reds| AL East | W | L | PCT | GB |
|---|---|---|---|---|
56 | 38 | .596 | ||
54 | 42 | .563 | 3.0 | |
46 | 48 | .489 | 10.0 | |
46 | 51 | .474 | 11.5 | |
45 | 51 | .469 | 12.0 | |
| AL Central | W | L | PCT | GB |
50 | 45 | .526 | ||
51 | 46 | .526 | ||
48 | 49 | .495 | 3.0 | |
44 | 52 | .458 | 6.5 | |
38 | 59 | .392 | 13.0 | |
| AL West | W | L | PCT | GB |
49 | 47 | .510 | ||
48 | 49 | .495 | 1.5 | |
47 | 51 | .480 | 3.0 | |
41 | 55 | .427 | 8.0 | |
38 | 59 | .392 | 11.5 |
Rays
Red Sox
Orioles
Twins
Tigers
Rangers