| Starter | Tm | Tier | Game |
|---|---|---|---|
| Curt Schilling | PHI | 8.38 | 199805120_PHI_LAN |
| Greg Maddux | ATL | 7.22 | 199805110_ATL_CIN |
| Kevin Brown | SDN | 5.49 | 199805110_NYN_SDN |
| Jeff Fassero | SEA | 2.77 | 199805100_TOR_SEA |
| Al Leiter | NYN | 2.63 | 199805110_NYN_SDN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -4.18 | 199805110_BOS_TEX |
| Jamey Wright | COL | -2.86 | 199805120_COL_PIT |
| Jeff Suppan | ARI | -2.04 | 199805100_ARI_PHI |
| Glendon Rusch | KCA | -2.04 | 199805120_KCA_NYA |
| LaTroy Hawkins | MIN | -2.01 | 199805120_BAL_MIN |
Based on accumulated WAA for this season up to 1998-05-12.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 3.99 | Curt Schilling | 69 | PHI |
| +003+ | 3.6 | Greg Maddux | 65 | ATL |
| +004+ | 3.44 | Pedro Martinez | 57.3 | BOS |
| +006+ | 3.1 | Al Leiter | 45.3 | NYN |
| +011+ | 2.79 | Kevin Brown | 61 | SDN |
| +012+ | 2.76 | Francisco Cordova | 54.7 | PIT |
| +014+ | 2.67 | Andy Ashby | 57.7 | SDN |
| +015+ | 2.65 | Chuck Finley | 56 | ANA |
| +016+ | 2.61 | Mike Mussina | 44.7 | BAL |
| +019+ | 2.31 | Mike Hampton | 57 | HOU |
| +020+ | 2.18 | Todd Stottlemyre | 62.7 | SLN |
| +022+ | 2.17 | Bartolo Colon | 53.7 | CLE |
| +024+ | 2.14 | Jamie Moyer | 62.7 | SEA |
| +025+ | 2.14 | Roger Clemens | 41.3 | TOR |
| +030+ | 2.05 | Tom Glavine | 44 | ATL |
| +031+ | 2.04 | Jose Lima | 54.3 | HOU |
| +032+ | 2.02 | John Smoltz | 39.7 | ATL |
| +033+ | 1.96 | Aaron Sele | 56.7 | TEX |
| +035+ | 1.87 | Brett Tomko | 50.3 | CIN |
| +037+ | 1.85 | Rick Helling | 49.7 | TEX |
| +038+ | 1.82 | Ramon Martinez | 62 | LAN |
| +040+ | 1.81 | Jimmy Key | 49 | BAL |
| +041+ | 1.78 | Hideki Irabu | 25.3 | NYA |
| +042+ | 1.76 | Pete Harnisch | 55.3 | CIN |
| +044+ | 1.73 | Jeff Fassero | 40.7 | SEA |
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