| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 8.06 | 199006180_BOS_BAL |
| Dennis Martinez | WAS | 5.67 | 199006180_CHN_WAS |
| Dave Stewart | OAK | 5.25 | 199006190_OAK_DET |
| Tom Browning | CIN | 4.56 | 199006191_CIN_ATL |
| Bret Saberhagen | KCA | 4.18 | 199006170_MIN_KCA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Abbott | ANA | -1.92 | 199006180_ANA_CHA |
| Bobby Witt | TEX | -1.76 | 199006170_TEX_SEA |
| Jeff Robinson | DET | -1.6 | 199006180_OAK_DET |
| Todd Stottlemyre | TOR | -1.56 | 199006170_TOR_NYA |
| John Farrell | CLE | -0.83 | 199006190_BAL_CLE |
Based on accumulated WAA for this season up to 1990-06-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 4.11 | Jack Armstrong | 90.3 | CIN |
| +007+ | 3.92 | Tom Browning | 107 | CIN |
| +012+ | 3.28 | Dennis Martinez | 101 | WAS |
| +016+ | 3.14 | Bob Welch | 100 | OAK |
| +017+ | 3.09 | Mark Gardner | 78 | WAS |
| +018+ | 2.94 | Roger Clemens | 105.7 | BOS |
| +020+ | 2.78 | Dave Stieb | 84 | TOR |
| +022+ | 2.72 | Dave Stewart | 104.7 | OAK |
| +024+ | 2.66 | Frank Viola | 89.3 | NYN |
| +025+ | 2.62 | Bud Black | 99 | CLE |
| +026+ | 2.58 | Chuck Finley | 87 | ANA |
| +027+ | 2.57 | Bret Saberhagen | 102 | KCA |
| +028+ | 2.55 | Eric King | 74.7 | CHA |
| +034+ | 2.31 | Dan Petry | 76 | DET |
| +035+ | 2.29 | Ramon Martinez | 87.3 | LAN |
| +037+ | 2.26 | Ed Whitson | 94.3 | SDN |
| +043+ | 2.14 | Tim Leary | 96 | NYA |
| +049+ | 2.02 | John Tudor | 73 | SLN |
| +053+ | 1.94 | Charlie Leibrandt | 32 | ATL |
| +058+ | 1.83 | Kirk McCaskill | 62.3 | ANA |
| +060+ | 1.79 | Neal Heaton | 81.3 | PIT |
| +062+ | 1.74 | Greg Hibbard | 77.3 | CHA |
| +063+ | 1.73 | Mike Morgan | 92.7 | LAN |
| +074+ | 1.58 | Mike Boddicker | 95.3 | BOS |
| +076+ | 1.55 | Doug Drabek | 85.7 | PIT |
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