SINGLE SEASON
WINNING PERCENTAGE
10/06/2025
League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments
Rank Player WPCT YEAR Open Career Leaderboard
1 Matt Harvey .909 2015  
1 Shane McClanahan# .909 2023  
3 Yu Darvish# .864 2013  
4 Gerrit Cole# .850 2020  
5 CC Sabathia .846 2003  
6 Robbie Ray# .842 2019  
7 Sandy Koufax .833 1963  
7 Lucas Giolito# .833 2020  
7 Hyun-Jin Ryu .833 2017  
10 Mat Latos .826 2015  
11 Matt Belisle .824 2008  
12 Zach Eflin# .818 2023  
12 Phil Hughes .818 2012  
14 Ubaldo Jimenez .815 2012  
15 Oliver Perez .812 2005  
16 Catfish Hunter .808 1973  
16 John Lackey .808 2008  
18 Masahiro Tanaka .800 2019  
18 Nick Pivetta# .800 2023  
20 David Price .793 2015  
21 Zac Gallen# .792 2024  
21 John Danks .792 2013  
21 Corbin Burnes# .792 2024  
21 Sandy Koufax .792 1964  
25 Ricky Nolasco .789 2010  
25 Shane Bieber# .789 2022  
25 Koji Uehara .789 2010  
25 Zack Wheeler# .789 2024  
29 Clayton Kershaw# .786 2015  
30 Yu Darvish# .783 2015  
30 Matt Cain .783 2012  
32 Luis Severino# .773 2020  
32 Shohei Ohtani# .773 2019  
32 Jake Peavy .773 2007  
32 Corbin Burnes# .773 2022  
32 Andrew Heaney# .773 2020  
32 Justin Verlander# .773 2023  
38 Framber Valdez# .769 2024  
38 Freddy Peralta# .769 2024  
38 Aaron Harang .769 2008  
41 Chris Flexen# .765 2022  
41 Eric Berger .765 2010  
41 Sandy Koufax .765 1965  
41 James Paxton# .765 2020  
41 Nathan Eovaldi# .765 2017  
46 Ryne Nelson# .762 2025  
46 Neftali Feliz .762 2012  
46 Matt Garza .762 2012  
46 CC Sabathia .762 2004  
46 Lucas Giolito# .762 2021  
46 Jacob Degrom# .762 2019  
46 Yu Darvish# .762 2016  
53 Felix Hernandez .760 2006  
54 Sandy Koufax .750 1966  
54 Danny Salazar .750 2017  
54 Catfish Hunter .750 1972  
54 Shohei Ohtani# .750 2024  
54 CC Sabathia .750 2007  
54 David Price .750 2017  
54 Johnny Antonelli .750 1954  
54 David Price .750 2021  
54 Luiz Gohara .750 2019  
54 Jordan Montgomery# .750 2024  
54 Walker Buehler# .750 2019  
54 Felix Hernandez .750 2017  
54 Josh M. Johnson .750 2012  
54 Smith Smith .750 2010  
68 Chris Paddack# .739 2022  
68 Matt Moore# .739 2014  
70 Blake Snell# .737 2019  
70 Franklin Morales .737 2010  
70 J.P. Howell .737 2008  
70 Dylan Cease# .737 2023  
70 Smith Smith .737 2016  
70 Justin Verlander# .737 2021  
70 Kyle Gibson# .737 2022  
70 Taijuan Walker# .737 2018  
70 Clayton Kershaw# .737 2018  
79 John Lamb .733 2011  
79 Kevin Gausman# .733 2023  
79 Bob Feller .733 1951  
82 Zack Wheeler# .731 2019  
83 Shane McClanahan# .727 2024  
83 Rick Porcello .727 2018  
83 Mike Clevinger# .727 2020  
83 Lance McCullers Jr.# .727 2020  
83 Bud Norris .727 2015  
83 Gerrit Cole# .727 2018  
83 Jhoulys Chacin .727 2019  
83 Kyle Gibson# .727 2016  
83 Nathan Eovaldi# .727 2022  
83 Stephen Strasburg# .727 2014  
83 Jameson Taillon# .727 2019  
83 Brad Keller# .727 2019  
83 Stephen Strasburg# .727 2012  
96 Tomoyuki Sugano# .722 2025  
97 Stephen Strasburg# .720 2013  
97 CC Sabathia .720 2009  
97 Charlie Morton# .720 2018  
97 David Price .720 2016  
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