best k/9 MLB history
| LEAGUE | K/9 | G | W% | W | L | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | IBB | TBF | WP | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | UA | 5.88 | 856 | .500 | 422 | 422 | 856 | 3.04 | 4,830 | 759 | 8 | 7397.0 | 7,457 | 2,501 | 4,825 | 125 | 1,134 | 31,610 | 690 | 1.38 | 4.26 | 0.15 | 15.3 | 3.6 | 1.16 | 5.87 | 9.07 | ||||
| 2 | AL | 5.40 | 211,772 | .501 | 105,611 | 105,373 | 211,772 | 3.98 | 1,134,502 | 53,341 | 8,861 | 38,479 | 1889419.2 | 1,881,590 | 835,638 | 951,192 | 168,253 | 696,474 | 55,717 | 32,806 | 8,083,823 | 57,758 | 3.32 | 1.63 | 0.80 | 14.0 | 8.6 | 1.36 | .284 | 4.53 | 8.96 |
| 3 | NL | 5.27 | 238,858 | .499 | 118,648 | 118,886 | 238,858 | 3.80 | 1,246,962 | 74,205 | 9,302 | 39,062 | 2129933.2 | 2,123,976 | 899,904 | 1,071,085 | 166,837 | 738,188 | 62,276 | 46,050 | 9,104,435 | 65,720 | 3.12 | 1.69 | 0.70 | 13.7 | 8.1 | 1.34 | .284 | 4.53 | 8.97 |
| 4 | FL | 3.92 | 2,486 | .500 | 1,220 | 1,220 | 2,486 | 3.12 | 9,644 | 1,457 | 214 | 162 | 22128.2 | 21,105 | 7,667 | 9,894 | 545 | 7,260 | 605 | 90,185 | 496 | 2.95 | 1.33 | 0.22 | 10.7 | 8.1 | 1.28 | .285 | 4.02 | 8.58 | |
| 5 | AA | 3.79 | 10,078 | .500 | 4,942 | 4,942 | 10,078 | 3.52 | 37,107 | 9,350 | 92 | 88166.1 | 88,685 | 34,473 | 57,272 | 1,907 | 26,334 | 2,505 | 383,871 | 6,443 | 2.69 | 1.41 | 0.19 | 9.7 | 6.9 | 1.30 | .276 | 5.85 | 9.05 | ||
| 6 | PL | 2.90 | 1,058 | .500 | 525 | 525 | 1,058 | 4.23 | 2,986 | 930 | 21 | 9268.2 | 10,523 | 4,355 | 7,278 | 316 | 4,182 | 409 | 43,308 | 500 | 4.06 | 0.71 | 0.31 | 6.9 | 9.7 | 1.59 | .288 | 7.07 | 10.22 |
Phillies 
Mets 
Brewers 
Cubs 
Dodgers 
Padres 
Blue Jays 
Yankees 
Guardians 
Tigers 
Mariners 
Astros 
ATL 
WSH 
PIT 
ATH 
BOS 
