| Starter | Tm | Tier | Game |
|---|---|---|---|
| Greg Maddux | ATL | 11.82 | 199809180_ATL_ARI |
| Roger Clemens | TOR | 5.5 | 199809160_TOR_DET |
| Omar Daal | ARI | 2.33 | 199809170_ATL_ARI |
| Randy Johnson | HOU | 2.08 | 199809180_HOU_PIT |
| Chuck Finley | ANA | 2.01 | 199809160_ANA_TEX |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pedro Astacio | COL | -6.43 | 199809180_COL_SDN |
| Mike Oquist | OAK | -4.9 | 199809180_OAK_TEX |
| Ken Cloude | SEA | -4.56 | 199809180_SEA_ANA |
| John Burkett | TEX | -4.35 | 199809180_OAK_TEX |
| Javier Vazquez | WAS | -3.47 | 199809180_WAS_PHI |
Based on accumulated WAA for this season up to 1998-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.7 | Greg Maddux | 245 | ATL |
| +004+ | 11.14 | Kevin Brown | 243 | SDN |
| +008+ | 9.2 | Roger Clemens | 218.7 | TOR |
| +009+ | 9.19 | Tom Glavine | 215.3 | ATL |
| +012+ | 8.68 | Pedro Martinez | 220.3 | BOS |
| +014+ | 7.91 | Al Leiter | 179.7 | NYN |
| +019+ | 7.06 | Kenny Rogers | 224.7 | OAK |
| +024+ | 6.71 | Curt Schilling | 251.7 | PHI |
| +026+ | 6.5 | Omar Daal | 156.7 | ARI |
| +027+ | 6.41 | Dustin Hermanson | 177.7 | WAS |
| +029+ | 6.09 | Randy Johnson | 237.3 | TOT |
| +034+ | 5.88 | Brian Bohanon | 142.7 | TOT |
| +038+ | 5.6 | John Smoltz | 162.7 | ATL |
| +040+ | 5.56 | Mike Mussina | 194.3 | BAL |
| +041+ | 5.49 | Pete Harnisch | 196 | CIN |
| +043+ | 5.48 | Andy Ashby | 220.7 | SDN |
| +048+ | 5.36 | Jamie Moyer | 228.3 | SEA |
| +056+ | 5.06 | Chuck Finley | 217 | ANA |
| +062+ | 4.86 | Rick Reed | 207.3 | NYN |
| +066+ | 4.66 | Mike Hampton | 200.7 | HOU |
| +068+ | 4.49 | David Wells | 209.3 | NYA |
| +074+ | 4.26 | Denny Neagle | 208.3 | ATL |
| +075+ | 4.24 | Jose Lima | 221.3 | HOU |
| +076+ | 4.18 | Rolando Arrojo | 200.7 | TBA |
| +077+ | 4.16 | Matt Morris | 100.7 | SLN |
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