| Team | Tm | Tier | Game |
|---|---|---|---|
| Pittsburgh Pirates | PIT | 2.18 | 191509200_LAN_PIT |
| St. Louis Browns | BAL | 1.72 | 191509200_BAL_MIN |
| Washington Senators | MIN | 0.94 | 191509210_CHA_MIN |
| Philadelphia Phillies | PHI | 0.91 | 191509211_PHI_SLN |
| Chicago White Sox | CHA | 0.55 | 191509220_CHA_MIN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Philadelphia Athletics | OAK | -12.46 | 191509220_DET_OAK |
| New York Giants | SFN | -3.3 | 191509211_SFN_CHN |
| Chicago Cubs | CHN | -2.42 | 191509211_SFN_CHN |
| St. Louis Cardinals | SLN | -0.9 | 191509211_PHI_SLN |
| Boston Red Sox | BOS | -0.25 | 191509221_CLE_BOS |
Based on accumulated WAA for this season up to 1915-09-22.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +013+ | 4.68 | Al Mamaux | 236.3 | PIT |
| +020+ | 4.05 | Harry Coveleski | 294.3 | DET |
| +033+ | 3.1 | Gene Dale | 274.3 | CIN |
| +034+ | 3.08 | Doc Ayers | 192 | MIN |
| +043+ | 2.75 | Erskine Mayer | 257 | PHI |
| +050+ | 2.38 | Jeff Tesreau | 280 | SFN |
| +060+ | 2.03 | Carl Weilman | 279.3 | BAL |
| +076+ | 1.61 | Red Hoff | 38 | BAL |
| XXXXX | 1.16 | Reb Russell | 218.3 | CHA |
| XXXXX | 1.09 | Mellie Wolfgang | 52.3 | CHA |
| XXXXX | 0.9 | Lynn Brenton | 42.7 | CLE |
| XXXXX | 0.6 | Charlie Boardman | 19 | SLN |
| XXXXX | 0.4 | Phil Slattery | 6 | PIT |
| XXXXX | 0.25 | Bill Morrisette | 10 | OAK |
| XXXXX | 0.15 | Harry Eccles | 18 | OAK |
| XXXXX | 0.12 | Cliff Markle | 5 | NYA |
| XXXXX | 0.07 | Dan Tipple | 1 | NYA |
| XXXXX | 0.06 | Bob Wright | 1 | CHN |
| XXXXX | 0.02 | Carl Mays | 121.7 | BOS |
| XXXXX | -0.03 | Fred Lamlein | 19 | SLN |
| XXXXX | -0.09 | Paul Carter | 40.3 | CLE |
| XXXXX | -0.22 | Limb McKenry | 89.3 | CIN |
| XXXXX | -0.46 | King Cole | 51 | NYA |
| XXXXX | -0.63 | Red Oldham | 45.7 | DET |
| XXXXX | -0.72 | Earl Hamilton | 178 | BAL |
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