qSeason Leaders by league, IP
| Seg |
Lg |
SName |
Player |
Tm |
G |
GS |
W |
L |
IP |
| Lg | CFL | 2005 | WILLIS,Dontrelle | SEA | 34 | 33 | 20 | 12 | 281.1 |
| Lg | CFL | 2006 | WEBB,Brandon | LS | 36 | 35 | 25 | 5 | 259.2 |
| Lg | CFL | 2007 | WEBB,Brandon | LS | 37 | 35 | 21 | 8 | 253.2 |
| Lg | CFL | 2008 | LINCECUM,Tim | SEA | 35 | 35 | 22 | 7 | 272.0 |
| Lg | CFL | 2009 | GREINKE,Zack | NJH | 31 | 31 | 15 | 10 | 261.2 |
| Lg | CFL | 2010 | HUDSON,Tim | LS | 35 | 34 | 21 | 10 | 254.0 |
| Lg | CFL | 2011 | VERLANDER,Justin | NAP | 43 | 34 | 20 | 8 | 267.2 |
| Lg | CFL | 2012 | VERLANDER,Justin | NAP | 41 | 31 | 21 | 8 | 248.0 |
| Lg | CFL | 2013 | KERSHAW,Clayton | HTA | 33 | 33 | 25 | 6 | 268.1 |
| Lg | CFL | 2014 | HERNANDEZ,Felix | SAT | 31 | 31 | 18 | 8 | 247.2 |
| Lg | CFL | 2015 | ARRIETA,Jake | NAP | 33 | 33 | 27 | 3 | 268.1 |
| Lg | CFL | 2016 | VERLANDER,Justin | NAP | 33 | 33 | 14 | 12 | 237.2 |
| Lg | CFL | 2017 | STROMAN,Marcus | SAT | 32 | 32 | 11 | 12 | 227.1 |
| Lg | CFL | 2018 | deGROM,Jacob | OMR | 40 | 32 | 20 | 8 | 244.1 |
| Lg | CFL | 2019 | VERLANDER,Justin | NAP | 34 | 34 | 21 | 8 | 238.0 |
| Lg | CFL | 2020 | LYNN,Lance | WAS | 32 | 32 | 17 | 11 | 227.1 |
| Lg | CFL | 2021 | ALCANTARA,Sandy | NAP | 32 | 32 | 19 | 8 | 232.2 |
| Lg | GSL | 2005 | GARLAND,Jon | PLM | 36 | 36 | 21 | 6 | 258.0 |
| Lg | GSL | 2006 | HARANG,Aaron | CHH | 41 | 41 | 22 | 10 | 262.1 |
| Lg | GSL | 2007 | SABATHIA,C.C. | ARC | 36 | 36 | 22 | 9 | 267.2 |
| Lg | GSL | 2008 | DEMPSTER,Ryan | ARC | 34 | 34 | 21 | 7 | 243.2 |
| Lg | GSL | 2009 | VAZQUEZ,Javier | GBH | 35 | 35 | 20 | 6 | 253.0 |
| Lg | GSL | 2010 | SABATHIA,C.C. | ARC | 36 | 36 | 16 | 10 | 247.1 |
| Lg | GSL | 2011 | SABATHIA,C.C. | ARC | 33 | 33 | 16 | 13 | 247.0 |
| Lg | GSL | 2012 | LEE,Cliff | CRC | 34 | 34 | 18 | 9 | 244.2 |
| Lg | GSL | 2013 | WILSON,C.J. | BA | 34 | 34 | 15 | 13 | 243.1 |
| Lg | GSL | 2014 | GRAY,Sonny | ARC | 33 | 33 | 14 | 12 | 239.2 |
| Lg | GSL | 2015 | KEUCHEL,Dallas | ARC | 34 | 34 | 18 | 10 | 259.2 |
| Lg | GSL | 2016 | ROARK,Tanner | COB | 36 | 35 | 13 | 13 | 242.2 |
| Lg | GSL | 2017 | SANTANA,Ervin | SES | 34 | 32 | 20 | 8 | 234.0 |
| Lg | GSL | 2018 | SCHERZER,Max | SES | 33 | 33 | 21 | 8 | 247.2 |
| Lg | GSL | 2019 | COLE,Gerrit | SFS | 33 | 33 | 20 | 3 | 228.2 |
| Lg | GSL | 2020 | BIEBER,Shane | SFS | 35 | 35 | 15 | 8 | 234.2 |
| Lg | GSL | 2021 | WAINWRIGHT,Adam | SES | 34 | 34 | 20 | 9 | 239.0 |