| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Clemens | BOS | 9.85 | 199007080_BOS_TEX |
| Frank Viola | NYN | 8.3 | 199007080_NYN_ATL |
| Dennis Martinez | WAS | 6.68 | 199007080_HOU_WAS |
| Ted Higuera | MIL | 4.22 | 199007120_MIL_OAK |
| Dave Stewart | OAK | 3.77 | 199007080_OAK_CLE |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jack Morris | DET | -4.92 | 199007120_TEX_DET |
| Andy Hawkins | NYA | -2.4 | 199007120_CHA_NYA |
| David West | MIN | -1.67 | 199007080_MIN_NYA |
| Bobby Witt | TEX | -1.27 | 199007080_BOS_TEX |
| Mike Bielecki | CHN | -0.95 | 199007082_CHN_SFN |
Based on accumulated WAA for this season up to 1990-07-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +005+ | 4.93 | Frank Viola | 123 | NYN |
| +009+ | 4.51 | Roger Clemens | 135.7 | BOS |
| +010+ | 4.49 | Jack Armstrong | 114.7 | CIN |
| +014+ | 3.9 | Mark Gardner | 104.7 | WAS |
| +015+ | 3.66 | Chuck Finley | 117 | ANA |
| +019+ | 3.27 | Dennis Martinez | 130 | WAS |
| +021+ | 3.12 | Tom Browning | 129.7 | CIN |
| +022+ | 3.11 | Dave Stewart | 133 | OAK |
| +023+ | 3.04 | Greg Hibbard | 101.3 | CHA |
| +027+ | 2.89 | Bob Welch | 123.7 | OAK |
| +035+ | 2.69 | Ed Whitson | 121.3 | SDN |
| +039+ | 2.46 | Bud Black | 124.3 | CLE |
| +041+ | 2.4 | Zane Smith | 104.3 | WAS |
| +044+ | 2.36 | John Tudor | 92 | SLN |
| +046+ | 2.34 | Danny Darwin | 57.3 | HOU |
| +053+ | 2.13 | Teddy Higuera | 72 | MIL |
| +056+ | 2.09 | Trevor Wilson | 48.7 | SFN |
| +059+ | 2.02 | Eric King | 99.3 | CHA |
| +064+ | 1.98 | Kevin Brown | 129.3 | TEX |
| +066+ | 1.93 | Ramon Martinez | 112.3 | LAN |
| +068+ | 1.9 | Kevin Appier | 77.3 | KCA |
| +076+ | 1.76 | Dave Wells | 88.7 | TOR |
| +077+ | 1.75 | Kirk McCaskill | 84.3 | ANA |
| +079+ | 1.74 | Dave Stieb | 100 | TOR |
| +082+ | 1.7 | Oil Can Boyd | 96.7 | WAS |
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