| Starter | Tm | Tier | Game |
|---|---|---|---|
| Greg Maddux | ATL | 7.65 | 199805160_ATL_HOU |
| Pedro Martinez | BOS | 6.22 | 199805140_BOS_MIN |
| Kevin Brown | SDN | 6.21 | 199805160_PHI_SDN |
| Jeff Fassero | SEA | 3.49 | 199805160_SEA_TOR |
| Andy Pettitte | NYA | 2.11 | 199805150_MIN_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Bobby Witt | TEX | -3.77 | 199805160_TEX_CLE |
| Frank Castillo | DET | -2.99 | 199805150_OAK_DET |
| Jeff Suppan | ARI | -2.82 | 199805150_PIT_ARI |
| Kevin Ritz | COL | -1.87 | 199805160_MIL_COL |
| Dennis Springer | TBA | -1.61 | 199805140_KCA_TBA |
Based on accumulated WAA for this season up to 1998-05-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.09 | Greg Maddux | 72 | ATL |
| +003+ | 4.01 | Curt Schilling | 69 | PHI |
| +004+ | 3.99 | Pedro Martinez | 65.3 | BOS |
| +008+ | 3.17 | Mike Hampton | 65.7 | HOU |
| +009+ | 3.15 | Andy Ashby | 64.7 | SDN |
| +011+ | 3.06 | Kevin Brown | 68 | SDN |
| +013+ | 2.74 | Francisco Cordova | 60.7 | PIT |
| +014+ | 2.73 | Roger Clemens | 49.3 | TOR |
| +018+ | 2.45 | Chuck Finley | 62.3 | ANA |
| +019+ | 2.45 | Hideki Irabu | 32.3 | NYA |
| +021+ | 2.4 | Jeff Fassero | 49 | SEA |
| +025+ | 2.34 | Tom Glavine | 51 | ATL |
| +026+ | 2.29 | Mike Mussina | 50 | BAL |
| +027+ | 2.23 | Todd Stottlemyre | 71.7 | SLN |
| +029+ | 2.15 | Jamie Moyer | 62.7 | SEA |
| +030+ | 2.09 | Bartolo Colon | 53.7 | CLE |
| +031+ | 2.08 | Rolando Arrojo | 59.3 | TBA |
| +032+ | 2.07 | Rick Reed | 55.7 | NYN |
| +033+ | 2.03 | Pete Harnisch | 62.3 | CIN |
| +034+ | 2 | John Smoltz | 39.7 | ATL |
| +035+ | 1.99 | Jose Lima | 60.3 | HOU |
| +037+ | 1.98 | Pat Rapp | 53.3 | KCA |
| +042+ | 1.93 | Brett Tomko | 57.3 | CIN |
| +043+ | 1.9 | Jimmy Key | 56.3 | BAL |
| +052+ | 1.84 | Masato Yoshii | 43 | NYN |
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