| Starter | Tm | Tier | Game |
|---|---|---|---|
| Kevin Brown | SDN | 8.52 | 199809200_COL_SDN |
| Tom Glavine | ATL | 5.71 | 199809190_ATL_ARI |
| Roger Clemens | TOR | 5.44 | 199809210_BAL_TOR |
| Pedro Martinez | BOS | 5.05 | 199809190_BOS_CHA |
| Al Leiter | NYN | 4.08 | 199809200_MIA_NYN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Castillo | DET | -3.99 | 199809190_MIN_DET |
| Jason Bere | CIN | -2.17 | 199809190_CIN_CHN |
| Charles Nagy | CLE | -1.83 | 199809210_CLE_NYA |
| Darryl Kile | COL | -1.7 | 199809200_COL_SDN |
| Mike Sirotka | CHA | -1.46 | 199809200_BOS_CHA |
Based on accumulated WAA for this season up to 1998-09-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.66 | Greg Maddux | 245 | ATL |
| +003+ | 11.99 | Kevin Brown | 252 | SDN |
| +006+ | 10.09 | Tom Glavine | 224.3 | ATL |
| +008+ | 9.75 | Roger Clemens | 226.7 | TOR |
| +010+ | 8.98 | Pedro Martinez | 227.3 | BOS |
| +012+ | 8.7 | Al Leiter | 187.7 | NYN |
| +022+ | 6.98 | Curt Schilling | 260.7 | PHI |
| +023+ | 6.93 | Kenny Rogers | 229.7 | OAK |
| +025+ | 6.48 | Omar Daal | 156.7 | ARI |
| +027+ | 6.12 | Dustin Hermanson | 183 | WAS |
| +030+ | 6.08 | Pete Harnisch | 202 | CIN |
| +029+ | 6.08 | Randy Johnson | 237.3 | TOT |
| +034+ | 5.86 | Brian Bohanon | 142.7 | TOT |
| +035+ | 5.85 | Francisco Cordova | 214.3 | PIT |
| +042+ | 5.57 | John Smoltz | 162.7 | ATL |
| +043+ | 5.53 | Mike Mussina | 194.3 | BAL |
| +046+ | 5.41 | Andy Ashby | 220.7 | SDN |
| +047+ | 5.35 | Jamie Moyer | 228.3 | SEA |
| +056+ | 5.02 | Chuck Finley | 217 | ANA |
| +059+ | 4.89 | Carlos Perez | 234.3 | TOT |
| +062+ | 4.83 | Rick Reed | 207.3 | NYN |
| +069+ | 4.64 | Mike Hampton | 200.7 | HOU |
| +072+ | 4.47 | David Wells | 209.3 | NYA |
| +075+ | 4.22 | Denny Neagle | 208.3 | ATL |
| +076+ | 4.15 | Matt Morris | 100.7 | SLN |
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