| Starter | Tm | Tier | Game |
|---|---|---|---|
| Curt Schilling | PHI | 8.16 | 199805170_PHI_SDN |
| Greg Maddux | ATL | 7.65 | 199805160_ATL_HOU |
| Kevin Brown | SDN | 6.21 | 199805160_PHI_SDN |
| Roger Clemens | TOR | 5.36 | 199805180_SEA_TOR |
| Jeff Fassero | SEA | 3.49 | 199805160_SEA_TOR |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -3.77 | 199805160_TEX_CLE |
| Jamey Wright | COL | -3.39 | 199805170_MIL_COL |
| Glendon Rusch | KCA | -1.92 | 199805170_KCA_BOS |
| LaTroy Hawkins | MIN | -1.84 | 199805170_MIN_NYA |
| Doug Drabek | BAL | -1.69 | 199805180_TBA_BAL |
Based on accumulated WAA for this season up to 1998-05-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.43 | Curt Schilling | 77 | PHI |
| +002+ | 4.1 | Greg Maddux | 72 | ATL |
| +003+ | 3.98 | Pedro Martinez | 65.3 | BOS |
| +007+ | 3.25 | Mike Hampton | 72.7 | HOU |
| +008+ | 3.14 | Andy Ashby | 64.7 | SDN |
| +009+ | 3.12 | Al Leiter | 51.3 | NYN |
| +010+ | 3.07 | Tom Glavine | 58 | ATL |
| +011+ | 3.06 | Kevin Brown | 68 | SDN |
| +015+ | 2.77 | Francisco Cordova | 60.7 | PIT |
| +016+ | 2.68 | Bartolo Colon | 61.7 | CLE |
| +017+ | 2.64 | Aaron Sele | 64.7 | TEX |
| +019+ | 2.48 | Chuck Finley | 62.3 | ANA |
| +020+ | 2.44 | Hideki Irabu | 32.3 | NYA |
| +021+ | 2.4 | Jeff Fassero | 49 | SEA |
| +025+ | 2.28 | Mike Mussina | 50 | BAL |
| +029+ | 2.22 | Jamie Moyer | 69.3 | SEA |
| +028+ | 2.22 | Todd Stottlemyre | 71.7 | SLN |
| +034+ | 2.09 | Rick Reed | 55.7 | NYN |
| +037+ | 2.08 | Rolando Arrojo | 59.3 | TBA |
| +038+ | 2.02 | Pete Harnisch | 62.3 | CIN |
| +039+ | 1.99 | Pat Rapp | 53.3 | KCA |
| +040+ | 1.99 | Jose Lima | 60.3 | HOU |
| +041+ | 1.97 | Ramon Martinez | 68 | LAN |
| +046+ | 1.93 | Brett Tomko | 57.3 | CIN |
| +049+ | 1.89 | Jimmy Key | 56.3 | BAL |
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