| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pedro Martinez | BOS | 7.15 | 199805200_CHA_BOS |
| Kevin Brown | SDN | 6.52 | 199805210_SDN_PIT |
| Jeff Fassero | SEA | 4.24 | 199805210_SEA_TEX |
| Denny Neagle | ATL | 3.96 | 199805210_COL_ATL |
| Todd Stottlemyre | SLN | 1.91 | 199805210_SLN_PHI |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Castillo | DET | -2.85 | 199805200_DET_MIN |
| Dennis Springer | TBA | -2.35 | 199805190_TBA_TOR |
| Jeff Suppan | ARI | -1.81 | 199805210_ARI_MIA |
| Bill Swift | SEA | -1.66 | 199805200_SEA_TEX |
| Andy Larkin | MIA | -1.29 | 199805200_ARI_MIA |
Based on accumulated WAA for this season up to 1998-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 4.53 | Pedro Martinez | 72.3 | BOS |
| +002+ | 4.46 | Curt Schilling | 77 | PHI |
| +005+ | 4.13 | Greg Maddux | 72 | ATL |
| +006+ | 3.31 | Mike Hampton | 72.7 | HOU |
| +007+ | 3.24 | Francisco Cordova | 69 | PIT |
| +008+ | 3.24 | Kevin Brown | 75 | SDN |
| +009+ | 3.15 | Al Leiter | 51.3 | NYN |
| +012+ | 3.11 | Andy Ashby | 71.7 | SDN |
| +011+ | 3.11 | Chuck Finley | 70.3 | ANA |
| +013+ | 3.1 | Tom Glavine | 58 | ATL |
| +018+ | 2.72 | Bartolo Colon | 61.7 | CLE |
| +019+ | 2.69 | Hideki Irabu | 38.7 | NYA |
| +020+ | 2.67 | Aaron Sele | 64.7 | TEX |
| +023+ | 2.59 | Masato Yoshii | 52 | NYN |
| +025+ | 2.42 | Denny Neagle | 69.7 | ATL |
| +026+ | 2.37 | Jose Lima | 67.7 | HOU |
| +027+ | 2.35 | Jeff Fassero | 56 | SEA |
| +036+ | 2.29 | Jamie Moyer | 69.3 | SEA |
| +037+ | 2.27 | Todd Stottlemyre | 79.7 | SLN |
| +040+ | 2.22 | Brian Bohanon | 34 | NYN |
| +039+ | 2.22 | Shane Reynolds | 74.3 | HOU |
| +042+ | 2.2 | Pete Harnisch | 67.3 | CIN |
| +044+ | 2.06 | Woody Williams | 59 | TOR |
| +046+ | 2.04 | Ramon Martinez | 68 | LAN |
| +052+ | 1.9 | Carlos Perez | 72.7 | WAS |
_