| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | 2.39 | 199809100_MIL_HOU |
| New York Yankees | NYA | 1.82 | 199809110_TOR_NYA |
| Colorado Rockies | COL | 1.38 | 199809090_MIA_COL |
| Los Angeles Dodgers | LAN | 1.3 | 199809110_LAN_SDN |
| San Francisco Giants | SFN | 0.87 | 199809090_SFN_SDN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | -8.84 | 199809090_BAL_OAK |
| Kansas City Royals | KCA | -7.41 | 199809111_SEA_KCA |
| Seattle Mariners | SEA | -4.77 | 199809111_SEA_KCA |
| Chicago White Sox | CHA | -1.38 | 199809090_DET_CHA |
| Cincinnati Reds | CIN | -0.66 | 199809110_ARI_CIN |
Based on accumulated WAA for this season up to 1998-09-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +033+ | 5.61 | Robb Nen | 79.7 | SFN |
| +055+ | 4.9 | Ugueth Urbina | 62.7 | WAS |
| +065+ | 4.36 | Trevor Hoffman | 66.7 | SDN |
| +069+ | 4.23 | Jeff Shaw | 79 | TOT |
| +077+ | 3.87 | Albie Lopez | 71.7 | TBA |
| +078+ | 3.84 | Dennis Cook | 61.7 | NYN |
| +082+ | 3.8 | Chuck McElroy | 66.3 | COL |
| +083+ | 3.73 | Mike Jackson | 59 | CLE |
| +085+ | 3.52 | Mariano Rivera | 56.7 | NYA |
| +087+ | 3.48 | Ramiro Mendoza | 121.7 | NYA |
| +089+ | 3.45 | John Wetteland | 55 | TEX |
| +091+ | 3.4 | Terry Mulholland | 86.7 | CHN |
| +097+ | 3.19 | Juan Acevedo | 89 | SLN |
| +098+ | 3.18 | Paul Quantrill | 74 | TOR |
| +100+ | 3.11 | Tom Gordon | 70 | BOS |
| +101+ | 3.03 | Donne Wall | 66 | SDN |
| +102+ | 2.97 | Jason Christiansen | 61.7 | PIT |
| +103+ | 2.97 | Shigetoshi Hasegawa | 91.3 | ANA |
| +111+ | 2.76 | Steve Kline | 70.3 | WAS |
| +115+ | 2.69 | Ricardo Rincon | 61 | PIT |
| +116+ | 2.67 | Billy Wagner | 52.7 | HOU |
| +121+ | 2.61 | Kerry Ligtenberg | 67.3 | ATL |
| +124+ | 2.59 | John Hudek | 59.3 | TOT |
| +132+ | 2.52 | Graeme Lloyd | 34.7 | NYA |
| +130+ | 2.52 | Scott Service | 77 | KCA |
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