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Round 8
19 July 1980
| Clarke (4½) |
½-½ |
Delaney (6) |
| Porter (5) |
½-½ |
Curtin (4½) |
| Allen (4) |
½-½ |
Littleton (4) |
| Short (4) |
½-½ |
Cassidy (4½) |
| Wallace (4) |
½-½ |
Killane (4) |
| O'Hare (3½) |
0-1 |
Ludgate (3½) |
| Carton (3½) |
1-0 |
McGill (3½) |
| O'Brien (2½) |
½-½ |
McCarthy (3) |
| Lyons (2½) |
½-½ |
O'Reilly (3) |
| O'Shea (3½) |
0-1 |
McDonnell (3½) |
| Quinn (2) |
½-½ |
Pinkerton (2) |
| Cronin (½) |
½-½ |
McDaid (3) |
Scores after round 8
| Delaney | 6½ |
| Porter | 5½ |
| Cassidy | 5 |
| Clarke | 5 |
| Curtin | 5 |
| Allen | 4½ |
| Carton | 4½ |
| Killane | 4½ |
| Littleton | 4½ |
| Ludgate | 4½ |
| McDonnell | 4½ |
| Short | 4½ |
| Wallace | 4½ |
| McCarthy | 3½ |
| McDaid | 3½ |
| McGill | 3½ |
| O'Hare | 3½ |
| O'Reilly | 3½ |
| O'Shea | 3½ |
| Lyons | 3 |
| O'Brien | 3 |
| Pinkerton | 2½ |
| Quinn | 2½ |
| Cronin | 1 |