| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 10.34 | 199007250_BOS_MIL |
| Chuck Finley | ANA | 4.92 | 199007260_ANA_OAK |
| Bob Welch | OAK | 4.39 | 199007240_ANA_OAK |
| Ed Whitson | SDN | 3.31 | 199007251_CIN_SDN |
| John Tudor | SLN | 3.24 | 199007250_CHN_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Eric Show | SDN | -2.72 | 199007260_HOU_SDN |
| Jeff Robinson | DET | -2.19 | 199007240_BAL_DET |
| Bert Blyleven | ANA | -1.67 | 199007250_ANA_OAK |
| David West | MIN | -1.48 | 199007240_SEA_MIN |
| Todd Stottlemyre | TOR | -1.44 | 199007250_KCA_TOR |
Based on accumulated WAA for this season up to 1990-07-26.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.17 | Roger Clemens | 158.7 | BOS |
| +007+ | 4.97 | Chuck Finley | 144 | ANA |
| +008+ | 4.86 | Frank Viola | 141 | NYN |
| +013+ | 4.26 | Dennis Martinez | 151 | WAS |
| +015+ | 4.06 | Bob Welch | 145 | OAK |
| +017+ | 3.98 | Danny Darwin | 80.3 | HOU |
| +020+ | 3.75 | Mark Gardner | 117.7 | WAS |
| +021+ | 3.67 | Ramon Martinez | 136.3 | LAN |
| +023+ | 3.58 | John Tudor | 115 | SLN |
| +024+ | 3.56 | Tom Browning | 151.3 | CIN |
| +025+ | 3.43 | Ed Whitson | 142.7 | SDN |
| +029+ | 3.23 | Dave Stewart | 154.3 | OAK |
| +033+ | 3.13 | Bill Swift | 75.7 | SEA |
| +034+ | 3.1 | Greg Hibbard | 121 | CHA |
| +041+ | 2.82 | Bud Black | 146.3 | CLE |
| +043+ | 2.8 | Dave Wells | 103 | TOR |
| +048+ | 2.66 | Kirk McCaskill | 97.3 | ANA |
| +051+ | 2.57 | Jack Armstrong | 128.7 | CIN |
| +052+ | 2.54 | Doug Drabek | 132 | PIT |
| +060+ | 2.4 | Oil Can Boyd | 116.7 | WAS |
| +062+ | 2.38 | Dave Stieb | 114.7 | TOR |
| +068+ | 2.1 | Kevin Brown | 145.3 | TEX |
| +071+ | 2 | Greg Harris | 106.3 | BOS |
| +076+ | 1.93 | Zane Smith | 125.3 | WAS |
| +078+ | 1.91 | Mark Knudson | 121 | MIL |
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