| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 6.65 | 199006080_CLE_BOS |
| Dennis Martinez | WAS | 5.26 | 199006080_SLN_WAS |
| Dave Stewart | OAK | 3.65 | 199006090_KCA_OAK |
| Chris Bosio | MIL | 3.54 | 199006090_TOR_MIL |
| Tim Belcher | LAN | 3.12 | 199006080_LAN_SDN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Morris | DET | -5.75 | 199006100_SEA_DET |
| Jim Clancy | HOU | -2.85 | 199006090_CIN_HOU |
| Walt Terrell | PIT | -2.48 | 199006100_PIT_NYN |
| Curt Young | OAK | -1.9 | 199006080_KCA_OAK |
| Derek Lilliquist | ATL | -1.85 | 199006080_SFN_ATL |
Based on accumulated WAA for this season up to 1990-06-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 4.04 | Jack Armstrong | 82.7 | CIN |
| +005+ | 3.77 | Tom Browning | 91.3 | CIN |
| +006+ | 3.72 | Frank Viola | 78 | NYN |
| +009+ | 3.46 | Dave Stewart | 89.7 | OAK |
| +010+ | 3.34 | Bob Welch | 93 | OAK |
| +013+ | 2.93 | Roger Clemens | 96 | BOS |
| +016+ | 2.78 | Teddy Higuera | 55.3 | MIL |
| +018+ | 2.54 | Dennis Martinez | 86 | WAS |
| +019+ | 2.53 | Bret Saberhagen | 87.7 | KCA |
| +020+ | 2.53 | Mark Gardner | 65 | WAS |
| +024+ | 2.38 | Dave Stieb | 77 | TOR |
| +025+ | 2.35 | Bud Black | 84 | CLE |
| +027+ | 2.29 | Doug Drabek | 75 | PIT |
| +030+ | 2.25 | Eric King | 69 | CHA |
| +035+ | 2.12 | Tim Leary | 79.3 | NYA |
| +037+ | 2.08 | Mike Morgan | 77.7 | LAN |
| +039+ | 2.01 | Kirk McCaskill | 57.3 | ANA |
| +042+ | 1.95 | Chuck Finley | 73 | ANA |
| +045+ | 1.89 | Neal Heaton | 68.3 | PIT |
| +044+ | 1.89 | Dan Petry | 68.7 | DET |
| +049+ | 1.81 | Chris Bosio | 90.3 | MIL |
| +050+ | 1.78 | Ed Whitson | 79.3 | SDN |
| +055+ | 1.74 | Greg Hibbard | 70.3 | CHA |
| +058+ | 1.72 | Ramon Martinez | 78.3 | LAN |
| +074+ | 1.42 | Bobby Ojeda | 52.7 | NYN |
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