List of Baltimore Orioles pitching with the highest winning percentage
| Rank | Player Name | Winning Percentage |
| 1 | Mike Mussina | 0.645 |
| 2 | Jim Palmer | 0.638 |
| 3 | Dick Hall | 0.619 |
| 3 | Mike Cuellar | 0.619 |
| 5 | Dave McNally | 0.616 |
| 6 | Urban Shocker | 0.612 |
| 7 | Milt Pappas | 0.598 |
| 8 | Storm Davis | 0.587 |
| 9 | General Crowder | 0.579 |
| 10 | Tom Phoebus | 0.575 |
| 11 | Nels Potter | 0.570 |
| 12 | Mark Williamson | 0.568 |
| 13 | Tippy Martinez | 0.565 |
| 14 | Hal Brown | 0.564 |
| 15 | Scott McGregor | 0.561 |
| 16 | Steve Barber | 0.559 |
| 17 | Mike Flanagan | 0.549 |
| 18 | Arthur Rhodes | 0.544 |
| 19 | Chuck Estrada | 0.539 |
| 20 | Dave Danforth | 0.538 |
| 20 | Robin Roberts | 0.538 |
| 22 | Dennis Martinez | 0.537 |
| 22 | Scott Erickson | 0.537 |
| 24 | Sammy Stewart | 0.531 |
| 24 | Ross Grimsley | 0.531 |
