| Starter | Tm | Tier | Game |
|---|---|---|---|
| Frank Tanana | ANA | 6.79 | 197805090_ANA_DET |
| Jerry Koosman | NYN | 2.8 | 197805090_NYN_CIN |
| Steve Rogers | WAS | 2.66 | 197805091_WAS_ATL |
| Bert Blyleven | PIT | 2.45 | 197805100_PIT_SFN |
| Doug Rau | LAN | 2.27 | 197805090_SLN_LAN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tom Hume | CIN | -2.64 | 197805090_NYN_CIN |
| Paul Thormodsgard | MIN | -2.23 | 197805090_MIN_NYA |
| Jim Hunter | NYA | -1.73 | 197805090_MIN_NYA |
| Jim Clancy | TOR | -1.42 | 197805100_OAK_TOR |
| Dick Ruthven | ATL | -1.14 | 197805091_WAS_ATL |
Based on accumulated WAA for this season up to 1978-05-10.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 2.49 | Ross Grimsley | 52.3 | WAS |
| +004+ | 2.33 | Nolan Ryan | 50 | ANA |
| +006+ | 2.18 | Ron Guidry | 42.3 | NYA |
| +007+ | 2.12 | Rick Reuschel | 54.3 | CHN |
| +008+ | 2.1 | John Henry Johnson | 37.7 | OAK |
| +016+ | 1.77 | Paul Splittorff | 54.7 | KCA |
| +018+ | 1.57 | Ray Burris | 50.3 | CHN |
| +021+ | 1.53 | Manny Sarmiento | 28.3 | CIN |
| +024+ | 1.51 | Joaquin Andujar | 43.7 | HOU |
| +027+ | 1.5 | Dave Rozema | 32.3 | DET |
| +029+ | 1.5 | Pete Broberg | 38 | OAK |
| +030+ | 1.48 | Jim Palmer | 40.3 | BAL |
| +031+ | 1.43 | Bob Knepper | 44 | SFN |
| +032+ | 1.41 | John Montefusco | 48.7 | SFN |
| +034+ | 1.4 | Gaylord Perry | 37.3 | SDN |
| +036+ | 1.35 | Steve Carlton | 41.7 | PHI |
| +039+ | 1.29 | Bill Lee | 49 | BOS |
| +040+ | 1.28 | Mike Bruhert | 29.7 | NYN |
| XXXXX | 1.25 | John Denny | 52.3 | SLN |
| XXXXX | 1.18 | Mark Littell | 25.3 | SLN |
| XXXXX | 1.16 | Bob Owchinko | 37 | SDN |
| XXXXX | 1.13 | Ferguson Jenkins | 40.3 | TEX |
| XXXXX | 1.08 | Rick Rhoden | 45.7 | LAN |
| XXXXX | 1.02 | Fred Norman | 47.3 | CIN |
| XXXXX | 1.02 | Matt Keough | 37.3 | OAK |
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