| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bruce Hurst | SDN | 3.28 | 199104150_CIN_SDN |
| Bob Welch | OAK | 2.86 | 199104150_OAK_ANA |
| Greg Maddux | CHN | 2.2 | 199104150_PHI_CHN |
| Danny Darwin | BOS | 1.88 | 199104160_KCA_BOS |
| Ramon Martinez | LAN | 1.83 | 199104160_LAN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Melido Perez | CHA | -3.57 | 199104160_CHA_NYA |
| Walt Terrell | DET | -2.85 | 199104150_TOR_DET |
| Jim Abbott | ANA | -2.25 | 199104170_OAK_ANA |
| Storm Davis | KCA | -2.08 | 199104170_KCA_BOS |
| Jamie Moyer | SLN | -2.05 | 199104170_SLN_WAS |
Based on accumulated WAA for this season up to 1991-04-17.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 1.31 | Mike Boddicker | 17 | KCA |
| +003+ | 1.31 | John Smiley | 17 | PIT |
| XXXXX | 1.24 | Roger Clemens | 17 | BOS |
| XXXXX | 1.19 | Charles Nagy | 16.3 | CLE |
| XXXXX | 1.15 | Jack McDowell | 18 | CHA |
| XXXXX | 1.08 | Tom Candiotti | 15 | CLE |
| XXXXX | 1.03 | Tim Belcher | 14 | LAN |
| XXXXX | 0.89 | Brian Holman | 15 | SEA |
| XXXXX | 0.87 | Bill Sampen | 12 | WAS |
| XXXXX | 0.86 | Frank Viola | 15 | NYN |
| XXXXX | 0.86 | Jimmy Key | 15 | TOR |
| XXXXX | 0.86 | Mike Bielecki | 10.3 | CHN |
| XXXXX | 0.83 | Greg Maddux | 15 | CHN |
| XXXXX | 0.81 | Kevin Tapani | 16 | MIN |
| XXXXX | 0.77 | Matt Young | 14 | BOS |
| XXXXX | 0.77 | Norm Charlton | 16.3 | CIN |
| XXXXX | 0.7 | Chris Bosio | 15 | MIL |
| XXXXX | 0.66 | Dennis Martinez | 12 | WAS |
| XXXXX | 0.63 | Mike Moore | 12.3 | OAK |
| XXXXX | 0.63 | Tom Bolton | 12.3 | BOS |
| XXXXX | 0.61 | Dwight Gooden | 17 | NYN |
| XXXXX | 0.59 | Mike Morgan | 6.7 | LAN |
| XXXXX | 0.54 | Kevin Appier | 13 | KCA |
| XXXXX | 0.54 | Scott Garrelts | 6 | SFN |
| XXXXX | 0.5 | Bruce Hurst | 16 | SDN |
_