| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | 2.06 | 199809200_HOU_PIT |
| San Francisco Giants | SFN | 2.03 | 199809210_PIT_SFN |
| Colorado Rockies | COL | 1.62 | 199809190_COL_SDN |
| Los Angeles Dodgers | LAN | 1.41 | 199809190_LAN_SFN |
| New York Yankees | NYA | 1.3 | 199809200_NYA_BAL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Kansas City Royals | KCA | -5.38 | 199809190_KCA_CLE |
| Anaheim Angels | ANA | -3.81 | 199809210_TEX_ANA |
| Oakland Athletics | OAK | -2.95 | 199809200_OAK_TEX |
| Chicago Cubs | CHN | -2.88 | 199809200_CIN_CHN |
| Minnesota Twins | MIN | -2.38 | 199809210_CHA_MIN |
Based on accumulated WAA for this season up to 1998-09-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +037+ | 5.77 | Robb Nen | 85.7 | SFN |
| +065+ | 4.77 | Ugueth Urbina | 65.7 | WAS |
| +070+ | 4.52 | Trevor Hoffman | 70.7 | SDN |
| +074+ | 4.41 | Jeff Shaw | 81 | TOT |
| +081+ | 4.01 | Mike Jackson | 62 | CLE |
| +084+ | 3.81 | Dennis Cook | 66 | NYN |
| +083+ | 3.81 | Juan Acevedo | 95.3 | SLN |
| +087+ | 3.73 | Ramiro Mendoza | 124.3 | NYA |
| +088+ | 3.6 | Mariano Rivera | 59.7 | NYA |
| +089+ | 3.57 | Albie Lopez | 77.3 | TBA |
| +090+ | 3.53 | John Wetteland | 60 | TEX |
| +099+ | 3.28 | Chuck McElroy | 67.7 | COL |
| +101+ | 3.09 | Tom Gordon | 76 | BOS |
| +103+ | 3.04 | Paul Quantrill | 79 | TOR |
| +106+ | 3.02 | Donne Wall | 68.3 | SDN |
| +110+ | 2.9 | Kerry Ligtenberg | 70.3 | ATL |
| +113+ | 2.88 | Steve Kline | 71.7 | WAS |
| +114+ | 2.83 | Shigetoshi Hasegawa | 96.3 | ANA |
| +116+ | 2.82 | Mike Timlin | 77.3 | SEA |
| +117+ | 2.82 | Jim Corsi | 63.3 | BOS |
| +120+ | 2.76 | Jason Christiansen | 63.7 | PIT |
| +126+ | 2.65 | Mike Williams | 50.3 | PIT |
| +129+ | 2.58 | Sean Bergman | 170 | HOU |
| +132+ | 2.53 | Rodney Beck | 74.3 | CHN |
| +135+ | 2.51 | Dave Veres | 72.3 | COL |
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