| Starter | Tm | Tier | Game |
|---|---|---|---|
| Greg Maddux | ATL | 11.39 | 199809130_MIA_ATL |
| Pedro Martinez | BOS | 5.44 | 199809140_BOS_NYA |
| Curt Schilling | PHI | 2.97 | 199809140_PHI_ATL |
| Dustin Hermanson | WAS | 2.62 | 199809140_MIA_WAS |
| 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 |
| Javier Vazquez | WAS | -3.25 | 199809120_NYN_WAS |
| Jason Bere | CIN | -2.35 | 199809130_ARI_CIN |
| Darren Oliver | SLN | -1.55 | 199809120_SLN_HOU |
Based on accumulated WAA for this season up to 1998-09-14.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.92 | Greg Maddux | 238.7 | ATL |
| +003+ | 11.32 | Kevin Brown | 236 | SDN |
| +006+ | 9.22 | Tom Glavine | 215.3 | ATL |
| +008+ | 8.73 | Pedro Martinez | 220.3 | BOS |
| +009+ | 8.63 | Roger Clemens | 211 | TOR |
| +011+ | 8.11 | Al Leiter | 172.7 | NYN |
| +017+ | 7.61 | Kenny Rogers | 219.7 | OAK |
| +023+ | 6.72 | Curt Schilling | 251.7 | PHI |
| +025+ | 6.45 | Dustin Hermanson | 177.7 | WAS |
| +028+ | 5.95 | Omar Daal | 148.7 | ARI |
| +030+ | 5.88 | Randy Johnson | 230 | TOT |
| +039+ | 5.53 | Pete Harnisch | 196 | CIN |
| +043+ | 5.46 | Chuck Finley | 210.3 | ANA |
| +046+ | 5.26 | Francisco Cordova | 206.3 | PIT |
| +051+ | 5.1 | Mike Mussina | 185.3 | BAL |
| +052+ | 5.09 | Brian Bohanon | 134.7 | TOT |
| +054+ | 5.01 | David Wells | 204 | NYA |
| +055+ | 5 | John Smoltz | 156.7 | ATL |
| +056+ | 4.97 | Rick Reed | 201.3 | NYN |
| +067+ | 4.52 | Jamie Moyer | 219.3 | SEA |
| +070+ | 4.36 | Jose Lima | 221.3 | HOU |
| +074+ | 4.02 | Carlos Perez | 225.3 | TOT |
| +075+ | 3.95 | Mike Hampton | 192.7 | HOU |
| +081+ | 3.74 | David Cone | 193.7 | NYA |
| +091+ | 3.5 | Orlando Hernandez | 130 | NYA |
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