| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | NYN | 7.43 | 199007270_SLN_NYN |
| Dennis Martinez | WAS | 6.56 | 199007280_CHN_WAS |
| Bob Welch | OAK | 4.45 | 199007282_OAK_MIN |
| Tom Browning | CIN | 3.55 | 199007280_CIN_SFN |
| Doug Drabek | PIT | 3.29 | 199007290_PHI_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Tanana | DET | -7.6 | 199007280_BOS_DET |
| Andy Hawkins | NYA | -6.81 | 199007271_NYA_CLE |
| David West | MIN | -2.7 | 199007290_OAK_MIN |
| Mike Bielecki | CHN | -2.41 | 199007280_CHN_WAS |
| Bruce Ruffin | PHI | -1.89 | 199007280_PHI_PIT |
Based on accumulated WAA for this season up to 1990-07-29.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.18 | Roger Clemens | 158.7 | BOS |
| +005+ | 5.37 | Frank Viola | 149 | NYN |
| +008+ | 5 | Chuck Finley | 144 | ANA |
| +009+ | 4.55 | Mark Gardner | 126.7 | WAS |
| +016+ | 4.1 | Tom Browning | 159.7 | CIN |
| +017+ | 3.99 | Danny Darwin | 80.3 | HOU |
| +019+ | 3.86 | Dave Stewart | 163.3 | OAK |
| +021+ | 3.72 | Ramon Martinez | 144.3 | LAN |
| +025+ | 3.46 | Dennis Martinez | 156.3 | WAS |
| +032+ | 3.14 | Doug Drabek | 141 | PIT |
| +033+ | 3.13 | Bill Swift | 75.7 | SEA |
| +037+ | 2.96 | Dave Stieb | 121.7 | TOR |
| +039+ | 2.89 | Kirk McCaskill | 104.3 | ANA |
| +042+ | 2.8 | Bob Welch | 147 | OAK |
| +044+ | 2.77 | Greg Hibbard | 127 | CHA |
| +053+ | 2.44 | Jack Armstrong | 136.7 | CIN |
| +057+ | 2.38 | Oil Can Boyd | 116.7 | WAS |
| +058+ | 2.37 | Kevin Brown | 153.3 | TEX |
| +066+ | 2.32 | Greg Harris | 114.3 | BOS |
| +068+ | 2.27 | Bud Black | 149.7 | CLE |
| +077+ | 2.09 | Dave Wells | 105 | TOR |
| +083+ | 2 | Zane Smith | 126.3 | WAS |
| +095+ | 1.8 | Kevin Appier | 100 | KCA |
| +098+ | 1.75 | Eric King | 118 | CHA |
| +099+ | 1.74 | Tom Candiotti | 128 | CLE |
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