| Starter | Tm | Tier | Game |
|---|---|---|---|
| Greg Maddux | ATL | 10.83 | 199806070_ATL_BAL |
| Kevin Brown | SDN | 7.02 | 199806050_SDN_TEX |
| Curt Schilling | PHI | 6.74 | 199806070_PHI_TOR |
| Pedro Martinez | BOS | 5.44 | 199806050_NYN_BOS |
| Al Leiter | NYN | 3.97 | 199806050_NYN_BOS |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Castillo | DET | -6.62 | 199806050_DET_MIL |
| Bobby Witt | TEX | -5.72 | 199806070_SDN_TEX |
| Jamey Wright | COL | -3.47 | 199806070_COL_ANA |
| Doug Drabek | BAL | -2.02 | 199806070_ATL_BAL |
| Kent Mercker | SLN | -1.5 | 199806070_SFN_SLN |
Based on accumulated WAA for this season up to 1998-06-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.87 | Greg Maddux | 106.3 | ATL |
| +005+ | 4.9 | Chuck Finley | 93.3 | ANA |
| +006+ | 4.85 | Andy Ashby | 97.7 | SDN |
| +007+ | 4.69 | Francisco Cordova | 89 | PIT |
| +009+ | 4.65 | Al Leiter | 73.3 | NYN |
| +010+ | 4.47 | Tom Glavine | 81.3 | ATL |
| +012+ | 4.28 | Hideki Irabu | 62 | NYA |
| +013+ | 4.22 | Curt Schilling | 107.7 | PHI |
| +015+ | 3.69 | Ramon Martinez | 90 | LAN |
| +016+ | 3.67 | Mike Hampton | 92 | HOU |
| +017+ | 3.67 | Rick Reed | 76 | NYN |
| +018+ | 3.59 | Shane Reynolds | 99.3 | HOU |
| +022+ | 3.42 | Kevin Brown | 96 | SDN |
| +023+ | 3.19 | Carlos Perez | 97.7 | WAS |
| +025+ | 3.17 | Pete Harnisch | 86.3 | CIN |
| +026+ | 3.08 | Jose Lima | 90.3 | HOU |
| +027+ | 3.07 | Todd Stottlemyre | 101.7 | SLN |
| +029+ | 3.03 | Denny Neagle | 91.7 | ATL |
| +031+ | 2.87 | Brad Radke | 83.7 | MIN |
| +034+ | 2.81 | Pedro Martinez | 89.7 | BOS |
| +038+ | 2.7 | Orel Hershiser | 83.3 | SFN |
| +039+ | 2.66 | Woody Williams | 78.7 | TOR |
| +044+ | 2.53 | Masato Yoshii | 65 | NYN |
| +050+ | 2.41 | Roger Clemens | 78.3 | TOR |
| +053+ | 2.4 | Bartolo Colon | 84.3 | CLE |
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