| Starter | Tm | Tier | Game |
|---|---|---|---|
| Mark Langston | WAS | 4.85 | 198908110_PIT_WAS |
| Bret Saberhagen | KCA | 4.15 | 198908110_TOR_KCA |
| Chuck Finley | ANA | 3.69 | 198908100_SEA_ANA |
| Mike Moore | OAK | 3.3 | 198908110_OAK_ANA |
| Sid Fernandez | NYN | 2.92 | 198908102_SLN_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Storm Davis | OAK | -2.56 | 198908100_OAK_CHA |
| Jerry Reuss | MIL | -2.07 | 198908090_MIL_DET |
| Rich Dotson | CHA | -1.95 | 198908090_OAK_CHA |
| Pete Smith | ATL | -1.37 | 198908090_ATL_LAN |
| Bob Forsch | HOU | -1.33 | 198908100_HOU_SDN |
Based on accumulated WAA for this season up to 1989-08-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +006+ | 5.48 | Bert Blyleven | 172.3 | ANA |
| +005+ | 5.48 | Mike Moore | 174.3 | OAK |
| +008+ | 5.41 | Chris Bosio | 181.3 | MIL |
| +007+ | 5.41 | Orel Hershiser | 184 | LAN |
| +009+ | 5.25 | Mark Langston | 192.3 | TOT |
| +010+ | 5.02 | John Cerutti | 154.3 | TOR |
| +012+ | 4.92 | Chuck Finley | 168.3 | ANA |
| +017+ | 4.53 | Bret Saberhagen | 175.7 | KCA |
| +021+ | 4.43 | John Smoltz | 176.3 | ATL |
| +022+ | 4.25 | Bryn Smith | 157.7 | WAS |
| +026+ | 4.03 | John Smiley | 171.7 | PIT |
| +027+ | 4 | Ed Whitson | 170.3 | SDN |
| +028+ | 3.82 | Greg Swindell | 153.3 | CLE |
| +031+ | 3.69 | Kevin Brown | 170.7 | TEX |
| +032+ | 3.68 | Greg Maddux | 169 | CHN |
| +033+ | 3.65 | Mike Scott | 166.7 | HOU |
| +037+ | 3.54 | Mike Morgan | 135 | LAN |
| +044+ | 3.36 | Mike Bielecki | 148.3 | CHN |
| +046+ | 3.25 | Sid Fernandez | 146.7 | NYN |
| +051+ | 3.05 | Kirk McCaskill | 144.3 | ANA |
| +052+ | 2.98 | Bruce Hurst | 180.3 | SDN |
| +053+ | 2.95 | Dennis Martinez | 172 | WAS |
| +059+ | 2.88 | Tom Candiotti | 142.7 | CLE |
| +065+ | 2.77 | Doug Drabek | 171.7 | PIT |
| +066+ | 2.71 | Chuck Cary | 67.3 | NYA |
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