| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | 2.22 | 199809160_NYN_HOU |
| Colorado Rockies | COL | 1.66 | 199809180_COL_SDN |
| Boston Red Sox | BOS | 1.5 | 199809180_BOS_CHA |
| Tampa Bay Devil Rays | TBA | 1.42 | 199809160_NYA_TBA |
| Los Angeles Dodgers | LAN | 1.4 | 199809180_LAN_SFN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Seattle Mariners | SEA | -3.86 | 199809160_SEA_OAK |
| Oakland Athletics | OAK | -2.76 | 199809180_OAK_TEX |
| Kansas City Royals | KCA | -2.74 | 199809180_KCA_CLE |
| Detroit Tigers | DET | -2.57 | 199809160_TOR_DET |
| Chicago White Sox | CHA | -1.8 | 199809180_BOS_CHA |
Based on accumulated WAA for this season up to 1998-09-18.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +036+ | 5.78 | Robb Nen | 85.7 | SFN |
| +055+ | 5.09 | Ugueth Urbina | 64.7 | WAS |
| +070+ | 4.44 | Trevor Hoffman | 69.7 | SDN |
| +071+ | 4.42 | Jeff Shaw | 81 | TOT |
| +079+ | 3.92 | Mike Jackson | 61 | CLE |
| +081+ | 3.82 | Dennis Cook | 66 | NYN |
| +086+ | 3.71 | Mariano Rivera | 58.7 | NYA |
| +087+ | 3.7 | Ramiro Mendoza | 124 | NYA |
| +088+ | 3.7 | Albie Lopez | 74.3 | TBA |
| +089+ | 3.69 | Chuck McElroy | 67.3 | COL |
| +091+ | 3.62 | Juan Acevedo | 93.3 | SLN |
| +092+ | 3.54 | John Wetteland | 60 | TEX |
| +097+ | 3.38 | Paul Quantrill | 78 | TOR |
| +102+ | 3.03 | Terry Mulholland | 95.7 | CHN |
| +106+ | 2.92 | Tom Gordon | 74.3 | BOS |
| +107+ | 2.91 | Kerry Ligtenberg | 70.3 | ATL |
| +108+ | 2.9 | Donne Wall | 67 | SDN |
| +109+ | 2.88 | Steve Kline | 71.7 | WAS |
| +110+ | 2.84 | Shigetoshi Hasegawa | 96.3 | ANA |
| +117+ | 2.77 | Jason Christiansen | 63.7 | PIT |
| +119+ | 2.72 | Mike Timlin | 76.3 | SEA |
| +121+ | 2.71 | Jim Corsi | 62.3 | BOS |
| +128+ | 2.54 | Rodney Beck | 74.3 | CHN |
| +132+ | 2.49 | Sean Bergman | 169 | HOU |
| +134+ | 2.45 | Mike Williams | 48.3 | PIT |
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