| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 5.57 | 199007050_OAK_MIL |
| Cincinnati Reds | CIN | 2.79 | 199007030_CIN_WAS |
| Chicago White Sox | CHA | 1.98 | 199007030_DET_CHA |
| Detroit Tigers | DET | 1.96 | 199007050_KCA_DET |
| Kansas City Royals | KCA | 1.42 | 199007040_NYA_KCA |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -3.81 | 199007040_ATL_PHI |
| Chicago Cubs | CHN | -2.61 | 199007040_CHN_LAN |
| St. Louis Cardinals | SLN | -1.62 | 199007050_SLN_SDN |
| Philadelphia Phillies | PHI | -1.47 | 199007040_ATL_PHI |
| Milwaukee Brewers | MIL | -1.27 | 199007030_OAK_MIL |
Based on accumulated WAA for this season up to 1990-07-05.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +014+ | 3.55 | Jeff Brantley | 62.3 | SFN |
| +018+ | 3.3 | Mark Eichhorn | 56.7 | ANA |
| +024+ | 3.02 | Mark Williamson | 51.3 | BAL |
| +029+ | 2.8 | Dennis Eckersley | 35.3 | OAK |
| +031+ | 2.73 | Edwin Nunez | 54.7 | DET |
| +034+ | 2.62 | Gregg Olson | 42.3 | BAL |
| +035+ | 2.58 | Doug Jones | 43.7 | CLE |
| +040+ | 2.42 | Rob Dibble | 47.7 | CIN |
| +045+ | 2.31 | Greg Harris | 62.7 | SDN |
| +044+ | 2.31 | Bill Landrum | 41 | PIT |
| +051+ | 2.21 | Bill Sampen | 47 | WAS |
| +052+ | 2.19 | Bobby Thigpen | 42.7 | CHA |
| +053+ | 2.17 | Tom Henke | 40 | TOR |
| +054+ | 2.16 | Steve Farr | 53 | KCA |
| +060+ | 1.95 | Bill Swift | 51 | SEA |
| +063+ | 1.9 | Gene Nelson | 34.7 | OAK |
| +064+ | 1.87 | Dennis Lamp | 56.7 | BOS |
| +065+ | 1.84 | Mike Schooler | 38.3 | SEA |
| +068+ | 1.81 | Lee Smith | 49.3 | TOT |
| +070+ | 1.8 | Jeff Montgomery | 51.3 | KCA |
| +071+ | 1.79 | Scott Radinsky | 33.7 | CHA |
| +074+ | 1.77 | Paul Gibson | 51 | DET |
| +075+ | 1.76 | Barry Jones | 40.3 | CHA |
| +076+ | 1.75 | Rick Honeycutt | 35.3 | OAK |
| +079+ | 1.7 | Juan Agosto | 52.7 | HOU |
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