| Starter | Tm | Tier | Game |
|---|---|---|---|
| Steve Carlton | PHI | 4.57 | 197805060_NYN_PHI |
| Bert Blyleven | PIT | 4.3 | 197805050_LAN_PIT |
| Rick Reuschel | CHN | 3.55 | 197805060_SFN_CHN |
| Nolan Ryan | ANA | 3.36 | 197805050_CLE_ANA |
| Ron Guidry | NYA | 2.8 | 197805050_TEX_NYA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dave Lemanczyk | TOR | -4.09 | 197805060_TOR_SEA |
| Paul Mitchell | SEA | -2.59 | 197805060_TOR_SEA |
| Tom Hume | CIN | -2.32 | 197805050_WAS_CIN |
| Jack Billingham | DET | -1.92 | 197805050_DET_OAK |
| Mike Caldwell | MIL | -1.04 | 197805050_KCA_MIL |
Based on accumulated WAA for this season up to 1978-05-06.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 2.31 | Nolan Ryan | 50 | ANA |
| +004+ | 2.21 | Ron Guidry | 42.3 | NYA |
| +005+ | 2.17 | Jim Palmer | 38.7 | BAL |
| +008+ | 2.07 | Rick Reuschel | 54.3 | CHN |
| +009+ | 2.04 | John Henry Johnson | 37.7 | OAK |
| +011+ | 2 | John Denny | 49.3 | SLN |
| +012+ | 1.96 | Ross Grimsley | 44.3 | WAS |
| +014+ | 1.9 | Pete Broberg | 33.3 | OAK |
| +015+ | 1.85 | Rick Rhoden | 40.3 | LAN |
| +017+ | 1.78 | Rick Waits | 34 | CLE |
| +018+ | 1.73 | Paul Splittorff | 54.7 | KCA |
| +024+ | 1.48 | Joaquin Andujar | 43.7 | HOU |
| +023+ | 1.48 | Dave Rozema | 32.3 | DET |
| +025+ | 1.46 | Tommy John | 40.7 | LAN |
| +028+ | 1.41 | Bob Knepper | 44 | SFN |
| +030+ | 1.38 | Gaylord Perry | 37.3 | SDN |
| +033+ | 1.36 | Craig Swan | 35.7 | NYN |
| +034+ | 1.34 | Steve Carlton | 41.7 | PHI |
| +039+ | 1.27 | Bob Owchinko | 33.7 | SDN |
| +040+ | 1.27 | Ray Burris | 42.3 | CHN |
| +042+ | 1.26 | Bill Lee | 49 | BOS |
| XXXXX | 1.19 | Rick Langford | 32.3 | OAK |
| XXXXX | 1.1 | Jim Barr | 40.3 | SFN |
| XXXXX | 1.1 | Matt Keough | 31.3 | OAK |
| XXXXX | 1.1 | John Montefusco | 40.3 | SFN |
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