| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | 1.91 | 199809190_HOU_PIT |
| Colorado Rockies | COL | 1.66 | 199809180_COL_SDN |
| Boston Red Sox | BOS | 1.5 | 199809180_BOS_CHA |
| Los Angeles Dodgers | LAN | 1.41 | 199809190_LAN_SFN |
| New York Yankees | NYA | 1.26 | 199809190_NYA_BAL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Kansas City Royals | KCA | -5.38 | 199809190_KCA_CLE |
| Seattle Mariners | SEA | -3.69 | 199809170_SEA_OAK |
| Oakland Athletics | OAK | -2.9 | 199809190_OAK_TEX |
| Chicago Cubs | CHN | -2.85 | 199809190_CIN_CHN |
| Detroit Tigers | DET | -2.4 | 199809170_TOR_DET |
Based on accumulated WAA for this season up to 1998-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +036+ | 5.78 | Robb Nen | 85.7 | SFN |
| +055+ | 5.09 | Ugueth Urbina | 64.7 | WAS |
| +068+ | 4.54 | Trevor Hoffman | 70.7 | SDN |
| +070+ | 4.42 | Jeff Shaw | 81 | TOT |
| +079+ | 3.92 | Mike Jackson | 61 | CLE |
| +080+ | 3.83 | Dennis Cook | 66 | NYN |
| +081+ | 3.81 | Albie Lopez | 75.3 | TBA |
| +084+ | 3.73 | Juan Acevedo | 94.3 | SLN |
| +086+ | 3.72 | Ramiro Mendoza | 124 | NYA |
| +085+ | 3.72 | Mariano Rivera | 58.7 | NYA |
| +088+ | 3.55 | John Wetteland | 60 | TEX |
| +095+ | 3.31 | Chuck McElroy | 67.7 | COL |
| +100+ | 3.04 | Donne Wall | 68.3 | SDN |
| +102+ | 3.01 | Paul Quantrill | 78.3 | TOR |
| +107+ | 2.92 | Tom Gordon | 74.3 | BOS |
| +109+ | 2.92 | Kerry Ligtenberg | 70.3 | ATL |
| +110+ | 2.89 | Steve Kline | 71.7 | WAS |
| +111+ | 2.85 | Shigetoshi Hasegawa | 96.3 | ANA |
| +114+ | 2.77 | Jason Christiansen | 63.7 | PIT |
| +120+ | 2.73 | Mike Timlin | 76.3 | SEA |
| +121+ | 2.72 | Jim Corsi | 62.3 | BOS |
| +127+ | 2.61 | Sean Bergman | 170 | HOU |
| +131+ | 2.54 | Rodney Beck | 74.3 | CHN |
| +134+ | 2.45 | Mike Williams | 48.3 | PIT |
| +136+ | 2.43 | Dave Veres | 71.3 | COL |
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