| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 4.22 | 201809010_SEA_OAK |
| Houston Astros | HOU | 2.45 | 201808300_ANA_HOU |
| Chicago Cubs | CHN | 2.15 | 201808310_CHN_PHI |
| Milwaukee Brewers | MIL | 2.12 | 201809010_MIL_WAS |
| Arizona Diamondbacks | ARI | 1.69 | 201808300_ARI_LAN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Kansas City Royals | KCA | -4.81 | 201808310_BAL_KCA |
| Texas Rangers | TEX | -3.89 | 201808310_MIN_TEX |
| Baltimore Orioles | BAL | -2.43 | 201809010_BAL_KCA |
| Chicago White Sox | CHA | -1.98 | 201808310_BOS_CHA |
| Colorado Rockies | COL | -1.68 | 201809010_COL_SDN |
Based on accumulated WAA for this season up to 2018-09-01.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +021+ | 4.92 | Blake Treinen | 67 | OAK |
| +034+ | 3.85 | Jeremy Jeffress | 66 | MIL |
| +041+ | 3.71 | T.J. McFarland | 69.3 | ARI |
| +046+ | 3.48 | Jared Hughes | 66.3 | CIN |
| +050+ | 3.36 | Edwin Diaz | 65.3 | SEA |
| +053+ | 3.31 | Josh Hader | 67 | MIL |
| +056+ | 3.25 | Adam Ottavino | 66 | COL |
| +057+ | 3.23 | Collin McHugh | 62 | HOU |
| +069+ | 2.93 | Steve Cishek | 61.7 | CHN |
| +073+ | 2.85 | Reyes Moronta | 60.7 | SFN |
| +074+ | 2.84 | Lou Trivino | 65 | OAK |
| +075+ | 2.83 | Jose Leclerc | 50.7 | TEX |
| +079+ | 2.76 | Seth Lugo | 90 | NYN |
| +082+ | 2.65 | Jesse Chavez | 81.7 | TOT |
| +090+ | 2.55 | Jose Alvarado | 56.7 | TBA |
| +092+ | 2.53 | Yoshihisa Hirano | 57 | ARI |
| +094+ | 2.52 | Dylan Floro | 59 | TOT |
| +095+ | 2.5 | Will Smith | 46 | SFN |
| +097+ | 2.47 | Craig Stammen | 67 | SDN |
| +098+ | 2.46 | Kirby Yates | 51.7 | SDN |
| +100+ | 2.44 | Seung Hwan Oh | 61.7 | TOT |
| +105+ | 2.39 | Edgar Santana | 61.3 | PIT |
| +109+ | 2.36 | Matt Strahm | 50.7 | SDN |
| +110+ | 2.35 | Hector Rondon | 50.7 | HOU |
| +114+ | 2.3 | Raisel Iglesias | 60.7 | CIN |
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