| Starter | Tm | Tier | Game |
|---|---|---|---|
| Greg Maddux | ATL | 9.95 | 199806010_ATL_MIL |
| Kevin Brown | SDN | 6.93 | 199805310_SLN_SDN |
| Curt Schilling | PHI | 6.87 | 199806020_WAS_PHI |
| Pedro Martinez | BOS | 6.11 | 199805310_BOS_NYA |
| Francisco Cordova | PIT | 2.65 | 199805310_WAS_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -5.38 | 199806020_TEX_TBA |
| Frank Castillo | DET | -4.89 | 199805310_CHA_DET |
| Jeff Suppan | ARI | -3.13 | 199805310_ARI_SFN |
| Jamey Wright | COL | -2.1 | 199806020_ARI_COL |
| Chris Haney | KCA | -1.83 | 199806020_ANA_KCA |
Based on accumulated WAA for this season up to 1998-06-02.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 5.98 | Greg Maddux | 97.3 | ATL |
| +005+ | 4.34 | Chuck Finley | 85.3 | ANA |
| +006+ | 4.26 | Al Leiter | 67.3 | NYN |
| +008+ | 4.19 | Kevin Brown | 91 | SDN |
| +009+ | 4.16 | Andy Ashby | 88.7 | SDN |
| +010+ | 4.11 | Mike Hampton | 85.7 | HOU |
| +011+ | 4.08 | Curt Schilling | 99.7 | PHI |
| +013+ | 4.07 | Tom Glavine | 75 | ATL |
| +012+ | 4.07 | Francisco Cordova | 82 | PIT |
| +014+ | 3.77 | Hideki Irabu | 54.7 | NYA |
| +015+ | 3.72 | Pedro Martinez | 85.7 | BOS |
| +019+ | 3.28 | Rick Reed | 70 | NYN |
| +020+ | 3.21 | Ramon Martinez | 83 | LAN |
| +021+ | 3.14 | Woody Williams | 72.7 | TOR |
| +022+ | 3.08 | Masato Yoshii | 60 | NYN |
| +026+ | 2.92 | Shane Reynolds | 90.3 | HOU |
| +027+ | 2.87 | Denny Neagle | 83.7 | ATL |
| +029+ | 2.83 | Todd Stottlemyre | 94 | SLN |
| +030+ | 2.81 | Brad Radke | 76.3 | MIN |
| +034+ | 2.69 | Pete Harnisch | 79.3 | CIN |
| +037+ | 2.63 | Orel Hershiser | 77.3 | SFN |
| +036+ | 2.63 | Aaron Sele | 77.3 | TEX |
| +039+ | 2.56 | Carlos Perez | 88.7 | WAS |
| +048+ | 2.26 | Bartolo Colon | 76.7 | CLE |
| +053+ | 2.21 | Jamie Moyer | 89.7 | SEA |
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