Single-Season OOPS
Leaderboard
 
* - Indicates Hall of Fame
Rank    Player OOPS IP Year Career Leaderboard
1.    J.D. Martin .4600 231.0 2018  
2.    Mark Prior * .4632 279.3 2009  
3.    Mark Prior * .4648 244.3 2011  
4.    Mark Prior * .4743 252.3 2013  
5.    Mark Prior * .4801 206.3 2014  
6.    Augustine Stearn .4898 248.3 2021  
7.    Augustine Stearn .4941 242.0 2022  
8.    Mark Prior * .4990 185.7 2015  
9.    Roger Heitman .4997 249.0 2013  
10.    Korey Mathison .5003 290.7 2021  
11.    Roy Halladay .5078 243.3 2007  
12.    Roy Halladay .5081 275.0 2009  
13.    Joseph Delagarza .5084 224.7 2021  
14.    Dennis Baley .5125 253.7 2022  
15.    Roy Halladay .5134 240.7 2008  
16.    Mark Prior * .5137 264.0 2006  
17.    Mark Prior * .5147 227.7 2018  
18.    Roy Halladay .5149 268.7 2010  
19.    Dennis Baley .5153 240.7 2021  
20.    Lewis Washburn .5155 257.7 2019  
21.    Augustine Stearn .5157 236.7 2018  
22.    Roger Heitman .5173 170.7 2017  
23.    Mark Prior * .5173 238.7 2008  
24.    J.D. Martin .5180 224.3 2017  
25.    Roger Heitman .5262 245.3 2016  
26.    Mark Prior * .5284 268.0 2007  
27.    Hosea Buendia .5327 220.0 2018  
28.    Zachery Hickman .5341 245.0 2022  
29.    Roger Heitman .5348 210.7 2015  
30.    Mark Prior * .5365 260.7 2005  
31.    Bennie Hamblin .5385 234.3 2018  
32.    Roger Heitman .5389 197.3 2014  
33.    Lewis Washburn .5391 239.0 2021  
34.    Roger Heitman .5405 266.3 2012  
35.    Joe Morgan Jr. .5407 212.7 2012  
36.    Korey Mathison .5410 287.3 2022  
37.    Augustine Stearn .5412 243.7 2020  
38.    Korey Mathison .5412 286.3 2020  
39.    Roy Halladay .5415 266.3 2006  
40.    Mark Prior * .5416 224.3 2017  
41.    Brian Anderson .5416 263.7 2020  
42.    Felipe Granados .5426 263.7 2019  
43.    Korey Mathison .5428 261.7 2019  
44.    Matt Capps .5430 244.3 2013  
45.    Willie Leon .5444 268.7 2022  
46.    J.D. Martin .5469 226.7 2015  
47.    Joe Morgan Jr. .5473 227.7 2018  
48.    Josh Beckett .5493 222.7 2008  
49.    Dennis Baley .5500 247.7 2020  
50.    Larry Strope .5514 239.3 2015  
51.    J.D. Martin .5515 234.3 2019  
52.    Rick Ankiel .5537 171.7 2014  
53.    Ronnie Holter .5540 171.3 2021  
54.    Rick Hummel .5555 232.3 2013  
55.    Anthony Lezama .5559 236.3 2019  
56.    Lewis Washburn .5560 208.3 2020  
57.    Richard Menzies .5564 227.3 2012  
58.    Roy Halladay .5566 264.7 2011  
59.    Kevin Rockey .5568 219.0 2018  
60.    Henry Mosqueda .5568 225.7 2021  
61.    Bennie Hamblin .5574 240.7 2020  
62.    Mark Buehrle .5576 259.0 2005  
63.    Brian Anderson .5576 273.7 2016  
64.    J.D. Martin .5578 209.7 2016  
65.    Carlos Silva .5584 197.0 2014  
66.    Larry Strope .5587 224.0 2007  
67.    Brian Anderson .5603 263.3 2014  
68.    Darren Nigro .5610 239.7 2012  
69.    Mark Prior * .5612 174.7 2004  
70.    Rick Ankiel .5613 205.7 2013  
71.    Amadis Rodriguez .5615 252.3 2019  
72.    Mark Prior * .5618 260.3 2010  
73.    Felipe Granados .5622 235.0 2021  
74.    Josh Beckett .5625 221.0 2006  
75.    Larry Strope .5629 261.0 2009  
76.    Julian Abeyta .5635 201.7 2016  
77.    Steven Maney .5636 215.7 2016  
78.    Bennie Hamblin .5639 224.7 2019  
79.    Felipe Granados .5640 227.7 2022  
80.    Steven Hildebrant .5648 225.3 2021  
81.    Josh Beckett .5657 189.7 2007  
82.    Mark Prior * .5658 210.3 2016  
83.    Condel Ortiz .5659 242.3 2015  
84.    Rick Hummel .5660 242.3 2010  
85.    Pedro Martinez .5668 213.0 2005  
86.    J.D. Martin .5671 212.7 2013  
87.    Silvio Santacruz .5673 255.0 2019  
88.    Jerome Williams .5693 243.3 2007  
89.    Willian Larson .5697 198.3 2022  
90.    Tony Armas .5698 167.0 2011  
91.    Dennis Baley .5703 216.7 2019  
92.    Felipe Granados .5713 241.3 2020  
93.    Carlos Zambrano .5714 233.7 2011  
94.    Lewis Washburn .5719 238.0 2022  
95.    J.D. Martin .5725 216.0 2020  
96.    Nicholas Lehr .5726 230.3 2011  
97.    Douglas Mondy .5732 198.7 2020  
98.    Adam Muniz .5739 218.7 2019  
99.    Eric Losey .5742 245.7 2021  
100.    Willie Leon .5747 237.3 2019