| 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 |
| John Tudor | SLN | 3.92 | 199006190_SLN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Clancy | HOU | -3.27 | 199006200_HOU_LAN |
| Jim Abbott | ANA | -1.92 | 199006180_ANA_CHA |
| Jeff Robinson | DET | -1.6 | 199006180_OAK_DET |
| Bruce Ruffin | PHI | -1.58 | 199006200_PIT_PHI |
| Wes Gardner | BOS | -1 | 199006200_BOS_TOR |
Based on accumulated WAA for this season up to 1990-06-20.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 3.99 | Jack Armstrong | 94 | CIN |
| +007+ | 3.9 | Tom Browning | 107 | CIN |
| +011+ | 3.46 | Bob Welch | 106 | OAK |
| +010+ | 3.46 | Dave Stieb | 91.7 | TOR |
| +014+ | 3.27 | Dennis Martinez | 101 | WAS |
| +018+ | 3.08 | Mark Gardner | 78 | WAS |
| +019+ | 2.94 | Roger Clemens | 105.7 | BOS |
| +025+ | 2.71 | Dave Stewart | 104.7 | OAK |
| +026+ | 2.65 | Frank Viola | 89.3 | NYN |
| +027+ | 2.61 | Bud Black | 99 | CLE |
| +028+ | 2.58 | Chuck Finley | 87 | ANA |
| +029+ | 2.56 | Bret Saberhagen | 102 | KCA |
| +030+ | 2.54 | Eric King | 74.7 | CHA |
| +032+ | 2.47 | Ramon Martinez | 94 | LAN |
| +042+ | 2.22 | Ed Whitson | 94.3 | SDN |
| +047+ | 2.12 | Tim Leary | 96 | NYA |
| +048+ | 2.1 | Kevin Brown | 103.7 | TEX |
| +051+ | 2.02 | John Tudor | 73 | SLN |
| +055+ | 1.95 | Greg Hibbard | 82 | CHA |
| +056+ | 1.93 | Charlie Leibrandt | 32 | ATL |
| +060+ | 1.83 | Kirk McCaskill | 62.3 | ANA |
| +062+ | 1.79 | Neal Heaton | 81.3 | PIT |
| +066+ | 1.72 | Mike Morgan | 92.7 | LAN |
| +075+ | 1.62 | Andy Benes | 87.7 | SDN |
| +079+ | 1.58 | Mike Boddicker | 95.3 | BOS |
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