| Team | Tm | Tier | Game |
|---|---|---|---|
| Colorado Rockies | COL | 2.46 | 199809070_MIA_COL |
| Houston Astros | HOU | 2.27 | 199809080_CIN_HOU |
| New York Yankees | NYA | 1.48 | 199809080_NYA_BOS |
| Los Angeles Dodgers | LAN | 1.08 | 199809080_LAN_ARI |
| Pittsburgh Pirates | PIT | 0.78 | 199809060_CHN_PIT |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | -8.48 | 199809060_TBA_OAK |
| Seattle Mariners | SEA | -5.03 | 199809070_BAL_SEA |
| Kansas City Royals | KCA | -1.65 | 199809080_KCA_TEX |
| Chicago White Sox | CHA | -1.59 | 199809080_DET_CHA |
| Detroit Tigers | DET | -1.24 | 199809060_CLE_DET |
Based on accumulated WAA for this season up to 1998-09-08.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +031+ | 5.6 | Robb Nen | 79.7 | SFN |
| +057+ | 4.65 | Ugueth Urbina | 60.3 | WAS |
| +069+ | 4.12 | Trevor Hoffman | 64.3 | SDN |
| +068+ | 4.12 | Jeff Shaw | 78 | TOT |
| +080+ | 3.76 | Albie Lopez | 70.7 | TBA |
| +081+ | 3.7 | Dennis Cook | 60.3 | NYN |
| +083+ | 3.64 | Mike Jackson | 58 | CLE |
| +085+ | 3.62 | Chuck McElroy | 64.7 | COL |
| +088+ | 3.44 | John Wetteland | 55 | TEX |
| +090+ | 3.41 | Mariano Rivera | 55.7 | NYA |
| +091+ | 3.38 | Ramiro Mendoza | 118.7 | NYA |
| +093+ | 3.27 | Shigetoshi Hasegawa | 90.3 | ANA |
| +096+ | 3.12 | Terry Mulholland | 84 | CHN |
| +097+ | 3.1 | Jason Christiansen | 61 | PIT |
| +098+ | 3.07 | Tom Gordon | 69.7 | BOS |
| +099+ | 3.07 | Juan Acevedo | 88 | SLN |
| +103+ | 2.92 | Paul Quantrill | 71.3 | TOR |
| +104+ | 2.9 | Donne Wall | 64.7 | SDN |
| +119+ | 2.59 | Steve Kline | 68.7 | WAS |
| +121+ | 2.58 | Ricardo Rincon | 60 | PIT |
| +128+ | 2.48 | Scott Service | 76.7 | KCA |
| +127+ | 2.48 | John Hudek | 58.3 | TOT |
| +130+ | 2.46 | Billy Wagner | 50.7 | HOU |
| +131+ | 2.44 | Kerry Ligtenberg | 65.7 | ATL |
| +134+ | 2.38 | Graeme Lloyd | 33.3 | NYA |
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