| Starter | Tm | Tier | Game |
|---|---|---|---|
| Greg Maddux | ATL | 11.39 | 199809130_MIA_ATL |
| Roger Clemens | TOR | 5.52 | 199809110_TOR_NYA |
| Kenny Rogers | OAK | 3.6 | 199809110_OAK_MIN |
| Chuck Finley | ANA | 2.97 | 199809110_ANA_BAL |
| Randy Johnson | HOU | 2.08 | 199809120_SLN_HOU |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pedro Astacio | COL | -7.36 | 199809120_COL_SFN |
| Mike Oquist | OAK | -4.87 | 199809130_OAK_MIN |
| Ken Cloude | SEA | -4.02 | 199809112_SEA_KCA |
| Javier Vazquez | WAS | -3.25 | 199809120_NYN_WAS |
| Jason Bere | CIN | -2.35 | 199809130_ARI_CIN |
Based on accumulated WAA for this season up to 1998-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.92 | Greg Maddux | 238.7 | ATL |
| +003+ | 11.32 | Kevin Brown | 236 | SDN |
| +006+ | 9.02 | Tom Glavine | 209.3 | ATL |
| +008+ | 8.61 | Roger Clemens | 211 | TOR |
| +007+ | 8.61 | Pedro Martinez | 213.3 | BOS |
| +011+ | 8.17 | Al Leiter | 172.7 | NYN |
| +017+ | 7.59 | Kenny Rogers | 219.7 | OAK |
| +025+ | 6.51 | Curt Schilling | 243.7 | PHI |
| +026+ | 6.14 | Dustin Hermanson | 170.7 | WAS |
| +028+ | 5.95 | Omar Daal | 148.7 | ARI |
| +030+ | 5.9 | Randy Johnson | 230 | TOT |
| +042+ | 5.46 | Chuck Finley | 210.3 | ANA |
| +045+ | 5.25 | Francisco Cordova | 206.3 | PIT |
| +048+ | 5.22 | Pete Harnisch | 189 | CIN |
| +050+ | 5.11 | Brian Bohanon | 134.7 | TOT |
| +051+ | 5.1 | Mike Mussina | 185.3 | BAL |
| +054+ | 5.03 | Rick Reed | 201.3 | NYN |
| +055+ | 5.01 | David Wells | 204 | NYA |
| +057+ | 5 | John Smoltz | 156.7 | ATL |
| +062+ | 4.53 | Jamie Moyer | 219.3 | SEA |
| +072+ | 4.02 | Jose Lima | 213.3 | HOU |
| +073+ | 4 | Mike Hampton | 192.7 | HOU |
| +082+ | 3.74 | David Cone | 193.7 | NYA |
| +089+ | 3.5 | Rolando Arrojo | 193.7 | TBA |
| +090+ | 3.46 | Matt Morris | 93.7 | SLN |
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