| Team | Tm | Tier | Game |
|---|---|---|---|
| Los Angeles Dodgers | LAN | 2.61 | 199808300_NYN_LAN |
| Colorado Rockies | COL | 1.88 | 199808300_CHN_COL |
| San Francisco Giants | SFN | 1.42 | 199808310_PHI_SFN |
| Montreal Expos | WAS | 1.35 | 199808310_WAS_SDN |
| Boston Red Sox | BOS | 1.18 | 199808310_SEA_BOS |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Florida Marlins | MIA | -6.35 | 199808310_SLN_MIA |
| Detroit Tigers | DET | -6.18 | 199809010_TEX_DET |
| Oakland Athletics | OAK | -4.74 | 199808310_OAK_CLE |
| Seattle Mariners | SEA | -2.43 | 199808300_SEA_NYA |
| St. Louis Cardinals | SLN | -1.74 | 199808300_ATL_SLN |
Based on accumulated WAA for this season up to 1998-09-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +038+ | 5.3 | Robb Nen | 76.7 | SFN |
| +055+ | 4.41 | Ugueth Urbina | 58 | WAS |
| +066+ | 4.02 | Trevor Hoffman | 63.3 | SDN |
| +067+ | 3.99 | Jeff Shaw | 76.7 | TOT |
| +077+ | 3.67 | Dennis Cook | 60 | NYN |
| +081+ | 3.57 | Albie Lopez | 68.7 | TBA |
| +083+ | 3.53 | John Wetteland | 53.7 | TEX |
| +086+ | 3.47 | Mike Jackson | 56.3 | CLE |
| +088+ | 3.45 | Mariano Rivera | 52 | NYA |
| +087+ | 3.45 | Chuck McElroy | 61 | COL |
| +094+ | 3.13 | Jason Christiansen | 59 | PIT |
| +095+ | 3.12 | Paul Quantrill | 69 | TOR |
| +096+ | 3.09 | Shigetoshi Hasegawa | 88.3 | ANA |
| +097+ | 3.07 | Ramiro Mendoza | 113.7 | NYA |
| +104+ | 2.97 | Steve Reed | 76.3 | TOT |
| +106+ | 2.93 | Terry Mulholland | 78 | CHN |
| +108+ | 2.91 | Tom Gordon | 68 | BOS |
| +110+ | 2.83 | John Hudek | 55.7 | TOT |
| +114+ | 2.74 | Jim Corsi | 58.3 | BOS |
| +116+ | 2.72 | Bill Simas | 58 | CHA |
| +119+ | 2.69 | Donne Wall | 62.7 | SDN |
| +120+ | 2.67 | Juan Acevedo | 84 | SLN |
| +123+ | 2.54 | Mike DeJean | 74.3 | COL |
| +124+ | 2.54 | Ricardo Rincon | 57.3 | PIT |
| +132+ | 2.38 | Billy Wagner | 47.7 | HOU |
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