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Round 4
19 July 1951
| Diskin (2½) |
1-0 |
O'Sullivan (3) |
| Gallagher (2) |
½-½ |
Bourke (2½) |
| O'Hanlon (2) |
0-1 |
Maher (2) |
| Appelbe (1½) |
1-0 |
Steen (2) |
| Boyd (1) |
½-½ |
Mulcahy (1½) |
| Kennedy (1½) |
½-½ |
Nash (1) |
| Finnegan, C. P. (1) |
1-0 |
Martin (1) |
| Finnegan, J. (½) |
0-1 |
Casey (1) |
| Kearney (½) |
1-0 |
Reid (½) |
Scores after round 4
| Diskin | 3½ |
| Bourke | 3 |
| Maher | 3 |
| O'Sullivan | 3 |
| Appelbe | 2½ |
| Gallagher | 2½ |
| Casey | 2 |
| Finnegan, C. P. | 2 |
| Kennedy | 2 |
| Mulcahy | 2 |
| O'Hanlon | 2 |
| Steen | 2 |
| Boyd | 1½ |
| Kearney | 1½ |
| Nash | 1½ |
| Martin | 1 |
| Finnegan, J. | ½ |
| Reid | ½ |