All 7 games of Round 18, 1991 are complete. The biggest win was Essendon over North Melbourne by 74 points; the closest was Melbourne over St Kilda by 1.
Updated Thu 10 Nov 2022, 9:19pm (Melbourne time)
| Home | Score | Away | Score | Venue |
|---|---|---|---|---|
| Essendon | 19.9 (123) | North Melbourne | 5.19 (49) | Windy Hill |
| Richmond | 13.10 (88) | Hawthorn | 13.16 (94) | Waverley Park |
| St Kilda | 16.14 (110) | Melbourne | 17.9 (111) | Moorabbin Oval |
| Fitzroy | 15.21 (111) | Collingwood | 18.16 (124) | Princes Park |
| Adelaide | 16.22 (118) | Sydney | 19.8 (122) | Football Park |
| Brisbane Lions | 14.16 (100) | Carlton | 12.21 (93) | People First Stadium |
| Geelong | 20.16 (136) | Western Bulldogs | 10.8 (68) | GMHBA Stadium |