| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Viola | NYN | 8.9 | 199007230_NYN_PHI |
| Dennis Martinez | WAS | 5.42 | 199007230_PIT_WAS |
| Dave Stewart | OAK | 4.54 | 199007230_ANA_OAK |
| Tom Browning | CIN | 3.26 | 199007230_CIN_SDN |
| Doug Drabek | PIT | 3.21 | 199007240_PIT_WAS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Andy Hawkins | NYA | -7.15 | 199007220_NYA_MIN |
| Jack Morris | DET | -6.61 | 199007220_DET_TEX |
| Derek Lilliquist | SDN | -2.3 | 199007220_SDN_SLN |
| Bruce Ruffin | PHI | -2.01 | 199007230_NYN_PHI |
| Storm Davis | KCA | -1.83 | 199007220_BOS_KCA |
Based on accumulated WAA for this season up to 1990-07-24.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +007+ | 4.83 | Frank Viola | 141 | NYN |
| +011+ | 4.35 | Chuck Finley | 135 | ANA |
| +012+ | 4.25 | Dennis Martinez | 151 | WAS |
| +015+ | 4.06 | Bob Welch | 145 | OAK |
| +019+ | 3.75 | Mark Gardner | 117.7 | WAS |
| +020+ | 3.64 | Ramon Martinez | 136.3 | LAN |
| +022+ | 3.47 | Tom Browning | 151.3 | CIN |
| +025+ | 3.34 | Danny Darwin | 71.3 | HOU |
| +028+ | 3.22 | Dave Stewart | 154.3 | OAK |
| +033+ | 3.06 | Greg Hibbard | 121 | CHA |
| +038+ | 2.94 | Ed Whitson | 135.3 | SDN |
| +041+ | 2.77 | Dave Wells | 103 | TOR |
| +042+ | 2.74 | Bill Swift | 69.3 | SEA |
| +044+ | 2.72 | John Tudor | 106 | SLN |
| +045+ | 2.65 | Kirk McCaskill | 97.3 | ANA |
| +050+ | 2.51 | Doug Drabek | 132 | PIT |
| +051+ | 2.49 | Jack Armstrong | 128.7 | CIN |
| +057+ | 2.35 | Dave Stieb | 114.7 | TOR |
| +063+ | 2.18 | Oil Can Boyd | 109.7 | WAS |
| +064+ | 2.17 | Eric King | 111 | CHA |
| +067+ | 2.09 | Kevin Brown | 145.3 | TEX |
| +068+ | 2.06 | Kevin Appier | 94 | KCA |
| +072+ | 1.96 | Bud Black | 137.3 | CLE |
| +071+ | 1.96 | Greg Harris | 106.3 | BOS |
| +080+ | 1.88 | Mark Knudson | 121 | MIL |
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