| Starter | Tm | Tier | Game |
|---|---|---|---|
| Tommy John | LAN | 4.03 | 197804190_CIN_LAN |
| Nolan Ryan | ANA | 3.75 | 197804180_ANA_SEA |
| Steve Rogers | WAS | 2.25 | 197804180_WAS_CHN |
| Ron Guidry | NYA | 1.87 | 197804180_BAL_NYA |
| John Montefusco | SFN | 1.61 | 197804180_ATL_SFN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Paul Mitchell | SEA | -3.13 | 197804180_ANA_SEA |
| Dave Lemanczyk | TOR | -2.7 | 197804180_KCA_TOR |
| Geoff Zahn | MIN | -2.42 | 197804190_OAK_MIN |
| Dick Ruthven | ATL | -2.36 | 197804190_ATL_SFN |
| Tom Hume | CIN | -1.35 | 197804190_CIN_LAN |
Based on accumulated WAA for this season up to 1978-04-20.
| Rank | WAA | Name | IP | Tm |
|---|
_