1978 PREMIERS
Pre-Season Results
| Played | Won | Lost | Draws | For | Against | Points | Position |
| 22 | 15 | 7 | 0 | 427 | 287 | 30 | 3rd out of 12 |
| Round 1 | Manly 19 vs St.George 5 | Brookvale |
| Round 2 | Manly 17 vs Penrith 10 | Brookvale |
| Round 3 | Manly 44 vs Newtown 17 | Brookvale |
| Round 4 | Canterbury 16 vs Manly 13 | Belmore |
| Round 5 | Manly 27 vs Parramatta 15 | Sydney Cricket Ground |
| Round 6 | Balmain 13 vs Manly 29 | Brookvale |
| Round 7 | Manly 7 vs Western Suburbs 13 | Lidcombe |
| Round 8 | Manly 5 vs South Sydney 30 | Brookvale |
| Round 9 | Manly 11 vs North Sydney 10 | North Sydney Oval |
| Round 10 | Cronulla 8 vs Manly 27 | Shark Park |
| Round 11 | Eastern Suburbs 12 vs Manly 15 | Brookvale |
| Round 12 | Manly 13 vs St.George 22 | Kogarah |
| Round 13 | Manly 32 vs Penrith 9 | Penrith |
| Round 14 | Manly 17 vs Newtown 10 | Henson |
| Round 15 | Canterbury 12 vs Manly 9 | Brookvale |
| Round 16 | Manly 19 vs Parramatta 20 | Brookvale |
| Round 17 | Balmain 19 vs Manly 7 | Leichhardt |
| Round 18 | Manly 16 vs Western Suburbs 10 | Brookvale |
| Round 19 | Manly 14 vs South Sydney 10 | Redfern |
| Round 20 | Manly 40 vs North Sydney 12 | Brookvale |
| Round 21 | Cronulla 4 vs Manly 26 | Brookvale |
| Round 22 | Eastern Suburbs 10 vs Manly 20 | Sydney Sports Ground |
| SF | Cronulla 17 vs Manly 12 | Sydney Cricket Ground |
| SF | Manly 13 vs Parramatta 13 | Sydney Cricket Ground |
| SF | Manly 17 vs Parramatta 11 | Sydney Cricket Ground |
| SF | Manly 14 vs Western Suburbs 7 | Sydney Cricket Ground |
| GF | Cronulla 11 vs Manly 11 | Sydney Cricket Ground |
| GFR | Cronulla 0 vs Manly 16 | Sydney Cricket Ground |
