| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | 3.46 | 199809270_NYN_ATL |
| Houston Astros | HOU | 2.84 | 199809260_CHN_HOU |
| New York Yankees | NYA | 2.66 | 199809270_TBA_NYA |
| Boston Red Sox | BOS | 2.08 | 199809250_BAL_BOS |
| New York Mets | NYN | 1.59 | 199809250_NYN_ATL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Anaheim Angels | ANA | -4.54 | 199809260_ANA_OAK |
| Kansas City Royals | KCA | -3.93 | 199809250_CHA_KCA |
| Chicago Cubs | CHN | -2.14 | 199809250_CHN_HOU |
| Detroit Tigers | DET | -2 | 199809250_DET_TOR |
| Seattle Mariners | SEA | -1.93 | 199809250_TEX_SEA |
Based on accumulated WAA for this season up to 1998-09-27.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +037+ | 5.87 | Robb Nen | 88.7 | SFN |
| +056+ | 5.16 | Ugueth Urbina | 69.3 | WAS |
| +067+ | 4.77 | Trevor Hoffman | 73 | SDN |
| +071+ | 4.59 | Jeff Shaw | 85 | TOT |
| +076+ | 4.41 | Denny Neagle | 210.3 | ATL |
| +079+ | 4.24 | Mike Jackson | 64 | CLE |
| +081+ | 4.11 | Juan Acevedo | 98.3 | SLN |
| +090+ | 3.61 | Dennis Cook | 68 | NYN |
| +091+ | 3.56 | Mariano Rivera | 61.3 | NYA |
| +093+ | 3.53 | John Wetteland | 62 | TEX |
| +096+ | 3.5 | Ramiro Mendoza | 130.3 | NYA |
| +099+ | 3.42 | Albie Lopez | 79.7 | TBA |
| +103+ | 3.23 | Donne Wall | 70.3 | SDN |
| +105+ | 3.21 | Tom Gordon | 79.3 | BOS |
| +108+ | 3.12 | Paul Quantrill | 80 | TOR |
| +111+ | 2.96 | Kerry Ligtenberg | 73 | ATL |
| +113+ | 2.92 | Dave Veres | 76.3 | COL |
| +114+ | 2.89 | Jason Christiansen | 64.7 | PIT |
| +116+ | 2.88 | Jim Corsi | 66 | BOS |
| +119+ | 2.81 | Mike Timlin | 79.3 | SEA |
| +120+ | 2.76 | Sean Bergman | 172 | HOU |
| +122+ | 2.74 | Mike Williams | 51 | PIT |
| +132+ | 2.61 | Jim Mecir | 84 | TBA |
| +133+ | 2.6 | Turk Wendell | 76.7 | NYN |
| +136+ | 2.58 | John Johnstone | 87.3 | SFN |
_