| Team | Tm | Tier | Game |
|---|---|---|---|
| Houston Astros | HOU | 2.49 | 199809130_SLN_HOU |
| New York Yankees | NYA | 1.82 | 199809110_TOR_NYA |
| Montreal Expos | WAS | 1.54 | 199809130_NYN_WAS |
| Los Angeles Dodgers | LAN | 1.39 | 199809130_LAN_SDN |
| Colorado Rockies | COL | 1.35 | 199809130_COL_SFN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Kansas City Royals | KCA | -7.41 | 199809111_SEA_KCA |
| Seattle Mariners | SEA | -5.08 | 199809120_SEA_KCA |
| Anaheim Angels | ANA | -2.8 | 199809130_ANA_BAL |
| Chicago Cubs | CHN | -1.49 | 199809130_MIL_CHN |
| Cincinnati Reds | CIN | -0.66 | 199809110_ARI_CIN |
Based on accumulated WAA for this season up to 1998-09-13.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +037+ | 5.61 | Robb Nen | 81.7 | SFN |
| +056+ | 5 | Ugueth Urbina | 63.7 | WAS |
| +065+ | 4.46 | Trevor Hoffman | 67.7 | SDN |
| +069+ | 4.33 | Jeff Shaw | 80 | TOT |
| +075+ | 3.95 | Dennis Cook | 62.7 | NYN |
| +077+ | 3.9 | Albie Lopez | 72 | TBA |
| +078+ | 3.83 | Mike Jackson | 60 | CLE |
| +083+ | 3.69 | Chuck McElroy | 67.3 | COL |
| +084+ | 3.68 | Ramiro Mendoza | 123.7 | NYA |
| +086+ | 3.55 | John Wetteland | 56 | TEX |
| +087+ | 3.52 | Mariano Rivera | 56.7 | NYA |
| +092+ | 3.3 | Juan Acevedo | 90 | SLN |
| +097+ | 3.24 | Paul Quantrill | 74.7 | TOR |
| +099+ | 3.08 | Jason Christiansen | 62.7 | PIT |
| +102+ | 2.92 | Donne Wall | 67 | SDN |
| +110+ | 2.79 | Tom Gordon | 71 | BOS |
| +112+ | 2.77 | Billy Wagner | 53.7 | HOU |
| +113+ | 2.76 | Steve Kline | 70.3 | WAS |
| +114+ | 2.75 | Terry Mulholland | 88.7 | CHN |
| +116+ | 2.72 | Kerry Ligtenberg | 68.3 | ATL |
| +117+ | 2.7 | Ricardo Rincon | 61 | PIT |
| +124+ | 2.57 | Scott Radinsky | 61.3 | LAN |
| +128+ | 2.55 | Jim Corsi | 58.7 | BOS |
| +134+ | 2.52 | Scott Service | 77 | KCA |
| +136+ | 2.51 | Graeme Lloyd | 34.7 | NYA |
_