| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jim Palmer | BAL | 9.56 | 197805030_TEX_BAL |
| Frank Tanana | ANA | 7.27 | 197805030_DET_ANA |
| Tommy John | LAN | 4.47 | 197805020_LAN_CHN |
| J.R. Richard | HOU | 3.89 | 197805030_HOU_WAS |
| Rick Reuschel | CHN | 3.68 | 197805020_LAN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Dick Pole | SEA | -3.61 | 197805020_CLE_SEA |
| Jim Hunter | NYA | -1.95 | 197805020_KCA_NYA |
| Dick Ruthven | ATL | -1.4 | 197805020_NYN_ATL |
| Tom Underwood | TOR | -1.32 | 197805020_TOR_OAK |
| Jerry Augustine | MIL | -1.2 | 197805030_CHA_MIL |
Based on accumulated WAA for this season up to 1978-05-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 2.21 | Jim Palmer | 38.7 | BAL |
| +006+ | 1.98 | Ross Grimsley | 44.3 | WAS |
| +008+ | 1.91 | Ron Guidry | 36 | NYA |
| +007+ | 1.91 | Pete Broberg | 33.3 | OAK |
| +010+ | 1.87 | Rick Reuschel | 48.3 | CHN |
| +009+ | 1.87 | Rick Rhoden | 40.3 | LAN |
| +012+ | 1.79 | Rick Waits | 34 | CLE |
| +014+ | 1.58 | Nolan Ryan | 41 | ANA |
| +016+ | 1.53 | John Henry Johnson | 28.7 | OAK |
| +019+ | 1.49 | Dave Rozema | 32.3 | DET |
| +020+ | 1.48 | Tommy John | 40.7 | LAN |
| +024+ | 1.45 | Paul Splittorff | 46.7 | KCA |
| +025+ | 1.42 | Pat Zachry | 34 | NYN |
| +029+ | 1.37 | Bill Lee | 40 | BOS |
| +031+ | 1.35 | Ray Burris | 42.3 | CHN |
| +030+ | 1.35 | Craig Swan | 35.7 | NYN |
| +035+ | 1.29 | Bob Owchinko | 33.7 | SDN |
| +037+ | 1.25 | John Denny | 40.3 | SLN |
| XXXXX | 1.2 | Rick Langford | 32.3 | OAK |
| XXXXX | 1.18 | Jim Barr | 40.3 | SFN |
| XXXXX | 1.18 | John Montefusco | 40.3 | SFN |
| XXXXX | 1.12 | Matt Keough | 31.3 | OAK |
| XXXXX | 1.01 | Steve Carlton | 32.7 | PHI |
| XXXXX | 1.01 | Rick Wise | 37 | CLE |
| XXXXX | 1 | Jerry Koosman | 41.3 | NYN |
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