| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 8.35 | 199006280_TOR_BOS |
| Dennis Martinez | WAS | 7.05 | 199006290_ATL_WAS |
| Ted Higuera | MIL | 4.88 | 199006300_MIL_SEA |
| Bob Welch | OAK | 4.14 | 199006300_OAK_TOR |
| Doug Drabek | PIT | 4 | 199006280_PIT_SLN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -2.58 | 199006280_TEX_MIN |
| Jim Abbott | ANA | -2 | 199006290_ANA_CLE |
| Mike Dunne | SDN | -1.5 | 199006290_CHN_SDN |
| Jeff Robinson | DET | -1.32 | 199006290_DET_KCA |
| Storm Davis | KCA | -1.04 | 199006300_DET_KCA |
Based on accumulated WAA for this season up to 1990-06-30.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +008+ | 4 | Jack Armstrong | 107.7 | CIN |
| +010+ | 3.9 | Roger Clemens | 122.7 | BOS |
| +011+ | 3.83 | Dave Stewart | 123.7 | OAK |
| +012+ | 3.63 | Eric King | 91 | CHA |
| +013+ | 3.58 | Frank Viola | 106.3 | NYN |
| +016+ | 3.36 | Dennis Martinez | 115 | WAS |
| +017+ | 3.35 | Bob Welch | 120.7 | OAK |
| +022+ | 2.95 | Chuck Finley | 99.7 | ANA |
| +025+ | 2.79 | Ramon Martinez | 108 | LAN |
| +026+ | 2.73 | Greg Hibbard | 90.3 | CHA |
| +029+ | 2.66 | Bret Saberhagen | 115.7 | KCA |
| +030+ | 2.63 | Kirk McCaskill | 75.3 | ANA |
| +034+ | 2.52 | Ed Whitson | 106.3 | SDN |
| +035+ | 2.47 | Tom Browning | 116.3 | CIN |
| +044+ | 2.26 | Teddy Higuera | 60.7 | MIL |
| +046+ | 2.24 | Kevin Brown | 111.7 | TEX |
| +045+ | 2.24 | Mark Gardner | 86.7 | WAS |
| +049+ | 2.17 | John Tudor | 86 | SLN |
| +065+ | 1.87 | Mark Langston | 106.3 | ANA |
| +072+ | 1.75 | Mike Boddicker | 110.7 | BOS |
| +073+ | 1.73 | Mike Morgan | 105.7 | LAN |
| +083+ | 1.61 | Greg Harris | 81.7 | BOS |
| +084+ | 1.6 | Doug Drabek | 96.7 | PIT |
| +098+ | 1.45 | Tom Gordon | 82 | KCA |
| +097+ | 1.45 | Bill Gullickson | 92 | HOU |
_