| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Tanana | ANA | 6.89 | 197805190_ANA_MIL |
| Steve Rogers | WAS | 3.78 | 197805180_CIN_WAS |
| Ron Guidry | NYA | 3.64 | 197805180_NYA_CLE |
| Tommy John | LAN | 3.19 | 197805170_PIT_LAN |
| Vida Blue | SFN | 3.01 | 197805170_CHN_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Pole | SEA | -4.18 | 197805191_TEX_SEA |
| Jack Billingham | DET | -2.1 | 197805170_DET_MIL |
| Jesse Jefferson | TOR | -1.73 | 197805190_NYA_TOR |
| Jerry Augustine | MIL | -1.54 | 197805170_DET_MIL |
| Dave Roberts | CHN | -1.4 | 197805190_SLN_CHN |
Based on accumulated WAA for this season up to 1978-05-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +004+ | 2.64 | Ron Guidry | 58.7 | NYA |
| +006+ | 2.6 | Rick Reuschel | 69 | CHN |
| +008+ | 2.38 | Bob Knepper | 62 | SFN |
| +010+ | 2.27 | Gaylord Perry | 54.3 | SDN |
| +011+ | 2.21 | John Henry Johnson | 49.7 | OAK |
| +012+ | 2.14 | Don Robinson | 61 | PIT |
| +013+ | 2.14 | Joaquin Andujar | 55.7 | HOU |
| +016+ | 2.09 | Bob Forsch | 64 | SLN |
| +020+ | 1.98 | Paul Splittorff | 70.3 | KCA |
| +022+ | 1.91 | Bill Lee | 64.3 | BOS |
| +024+ | 1.87 | Steve Carlton | 55.7 | PHI |
| +025+ | 1.83 | Ross Grimsley | 58.7 | WAS |
| +026+ | 1.8 | Tommy John | 63.7 | LAN |
| +028+ | 1.77 | Manny Sarmiento | 30.3 | CIN |
| +032+ | 1.63 | Randy Jones | 59 | SDN |
| +033+ | 1.63 | Steve Rogers | 66 | WAS |
| +036+ | 1.61 | Craig Swan | 55.7 | NYN |
| +038+ | 1.59 | Frank Tanana | 70.7 | ANA |
| +040+ | 1.52 | Fred Norman | 61.7 | CIN |
| +039+ | 1.52 | Dave Rozema | 40 | DET |
| +041+ | 1.51 | Phil Niekro | 73.7 | ATL |
| +043+ | 1.42 | Rick Waits | 48.3 | CLE |
| +047+ | 1.38 | Bob Sykes | 26 | DET |
| +050+ | 1.28 | Ferguson Jenkins | 48.3 | TEX |
| XXXXX | 1.18 | Nolan Ryan | 66 | ANA |
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