| Team | Tm | Tier | Game |
|---|---|---|---|
| Boston Americans | BOS | 15.33 | 190404300_BOS_MIN |
| Chicago White Sox | CHA | 2.99 | 190404290_CHA_DET |
| Cincinnati Reds | CIN | 0.01 | 190404290_CIN_SLN |
| Cleveland Naps | CLE | 0 | 190404300_BAL_CLE |
| Philadelphia Athletics | OAK | 0 | 190404300_NYA_OAK |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Pittsburgh Pirates | PIT | -3.07 | 190404300_CHN_PIT |
| St. Louis Browns | BAL | -0.68 | 190405010_CHA_BAL |
| Boston Beaneaters | ATL | -0.12 | 190404300_ATL_SFN |
| New York Giants | SFN | -0.03 | 190404300_ATL_SFN |
| Washington Senators | MIN | 0 | 190404290_BOS_MIN |
Based on accumulated WAA for this season up to 1904-05-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +008+ | 1.48 | Cy Young | 32 | BOS |
| XXXXX | 0.09 | Billy Milligan | 4 | SFN |
| XXXXX | 0.01 | Ambrose Puttmann | 5 | NYA |
| XXXXX | 0.01 | Jack Sutthoff | 23 | CIN |
| XXXXX | -0.37 | Hooks Wiltse | 9 | SFN |
| XXXXX | -0.42 | Roy Patterson | 5 | CHA |
| XXXXX | -0.46 | Grant Thatcher | 9 | LAN |
| XXXXX | -0.6 | Watty Lee | 2.7 | PIT |
| XXXXX | -0.61 | Tom Fisher | 14 | ATL |
| -008- | -1.51 | Cy Morgan | 12 | BAL |
| -002- | -2 | Jack Pfiester | 20 | PIT |
| -001- | -2.05 | Johnny Lush | 11.3 | PHI |
_