| Team | Tm | Tier | Game |
|---|---|---|---|
| Colorado Rockies | COL | 2.95 | 199809050_SDN_COL |
| New York Yankees | NYA | 1.38 | 199809070_NYA_BOS |
| Houston Astros | HOU | 1.36 | 199809070_CIN_HOU |
| Pittsburgh Pirates | PIT | 0.78 | 199809060_CHN_PIT |
| Tampa Bay Devil Rays | TBA | 0.74 | 199809060_TBA_OAK |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | -8.48 | 199809060_TBA_OAK |
| Seattle Mariners | SEA | -5.03 | 199809070_BAL_SEA |
| Chicago White Sox | CHA | -1.58 | 199809070_DET_CHA |
| Kansas City Royals | KCA | -1.53 | 199809050_KCA_ANA |
| Detroit Tigers | DET | -1.24 | 199809060_CLE_DET |
Based on accumulated WAA for this season up to 1998-09-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +036+ | 5.49 | Robb Nen | 78.7 | SFN |
| +058+ | 4.5 | Ugueth Urbina | 59 | WAS |
| +067+ | 4.11 | Trevor Hoffman | 64.3 | SDN |
| +070+ | 4.01 | Jeff Shaw | 77 | TOT |
| +078+ | 3.74 | Albie Lopez | 70.7 | TBA |
| +079+ | 3.68 | Dennis Cook | 60.3 | NYN |
| +081+ | 3.63 | Mike Jackson | 58 | CLE |
| +085+ | 3.54 | Chuck McElroy | 64 | COL |
| +088+ | 3.44 | Mariano Rivera | 54 | NYA |
| +089+ | 3.43 | John Wetteland | 55 | TEX |
| +090+ | 3.36 | Ramiro Mendoza | 118.7 | NYA |
| +093+ | 3.26 | Shigetoshi Hasegawa | 90.3 | ANA |
| +096+ | 3.09 | Jason Christiansen | 61 | PIT |
| +097+ | 3.06 | Tom Gordon | 69.7 | BOS |
| +101+ | 2.96 | Terry Mulholland | 82.7 | CHN |
| +102+ | 2.95 | Juan Acevedo | 87 | SLN |
| +103+ | 2.91 | Paul Quantrill | 71.3 | TOR |
| +105+ | 2.88 | Donne Wall | 64.7 | SDN |
| +120+ | 2.57 | Ricardo Rincon | 60 | PIT |
| +126+ | 2.52 | Mike DeJean | 74.3 | COL |
| +129+ | 2.47 | John Hudek | 58.3 | TOT |
| +130+ | 2.46 | Billy Wagner | 50.7 | HOU |
| +133+ | 2.4 | Steve Kline | 67 | WAS |
| +136+ | 2.37 | Graeme Lloyd | 33.3 | NYA |
| +141+ | 2.32 | Kerry Ligtenberg | 64.7 | ATL |
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