Semi Finals
| Date | Winner | Score | Loser | Score | Venue |
|---|---|---|---|---|---|
| 2/08/78 | Easts | 14 | Manly | 2 | Leichhardt Oval |
| 9/08/78 | St George | 21 | Cronulla | 7 | Leichhardt Oval |
Read more about this topic: 1978 Amco Cup
Semi Finals
| Date | Winner | Score | Loser | Score | Venue |
|---|---|---|---|---|---|
| 2/08/78 | Easts | 14 | Manly | 2 | Leichhardt Oval |
| 9/08/78 | St George | 21 | Cronulla | 7 | Leichhardt Oval |
Read more about this topic: 1978 Amco Cup