| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | 3.88 | 201305200_MIN_ATL |
| San Francisco Giants | SFN | 3.81 | 201305210_WAS_SFN |
| Cleveland Indians | CLE | 2.32 | 201305210_DET_CLE |
| Washington Nationals | WAS | 2.25 | 201305190_WAS_SDN |
| New York Yankees | NYA | 1.51 | 201305210_NYA_BAL |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Texas Rangers | TEX | -2.89 | 201305210_OAK_TEX |
| LA Angels of Anaheim | ANA | -2.45 | 201305210_SEA_ANA |
| Houston Astros | HOU | -2.18 | 201305210_KCA_HOU |
| Chicago Cubs | CHN | -1.88 | 201305210_CHN_PIT |
| Miami Marlins | MIA | -1.48 | 201305200_PHI_MIA |
Based on accumulated WAA for this season up to 2013-05-21.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +037+ | 1.82 | Tanner Scheppers | 24 | TEX |
| +040+ | 1.8 | Mark Melancon | 24 | PIT |
| +046+ | 1.69 | Robbie Ross | 20.3 | TEX |
| +049+ | 1.67 | Rex Brothers | 20.3 | COL |
| +051+ | 1.63 | Justin Wilson | 26.7 | PIT |
| +055+ | 1.56 | Tom Wilhelmsen | 19 | SEA |
| +056+ | 1.53 | Jesse Crain | 21 | CHA |
| +058+ | 1.51 | Cory Gearrin | 20.7 | ATL |
| +060+ | 1.49 | Tommy Hunter | 25.3 | BAL |
| +068+ | 1.41 | Sean Doolittle | 20 | OAK |
| +074+ | 1.36 | Bobby Parnell | 19.3 | NYN |
| +075+ | 1.35 | Jim Henderson | 19 | MIL |
| +080+ | 1.33 | Luke Gregerson | 18.7 | SDN |
| +082+ | 1.29 | Jason Grilli | 20.7 | PIT |
| +085+ | 1.26 | Drew Smyly | 28 | DET |
| XXXXX | 1.24 | Jonathan Papelbon | 17.7 | PHI |
| XXXXX | 1.19 | James Russell | 17.3 | CHN |
| XXXXX | 1.19 | Sam LeCure | 20 | CIN |
| XXXXX | 1.18 | Steve Delabar | 24 | TOR |
| XXXXX | 1.18 | Adam Warren | 19.7 | NYA |
| XXXXX | 1.16 | Matt Reynolds | 20 | ARI |
| XXXXX | 1.16 | Ryan Pressly | 21.7 | MIN |
| XXXXX | 1.14 | Ryan Webb | 26 | MIA |
| XXXXX | 1.13 | Bryan Shaw | 21.3 | CLE |
| XXXXX | 1.12 | Edward Mujica | 19 | SLN |
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