richmond (3rd) v collingwood (4th)
tigers overrun pies by 44 with a late charge they will play st kilda in the prelim final.
| Q1 | Q2 | Q3 | Q4 | Score | Date / Result | Ground | Crowd | ||
| Collingwood | 4.1 | 5.5 | 11.8 | 11.11 | 77 | Sat 4-Sep-1971 2:30 pm | M.C.G. | 99,771 | |
| Richmond | 4.4 | 8.8 | 11.10 | 18.13 | 121 | Richmond won by 44 points | |||
hawthorn (1st) v st kilda (2nd)
hawks hold off saints by 2 will play saints or tigers in grand.
| Q1 | Q2 | Q3 | Q4 | Score | Date / Result | Ground | Crowd | ||
| Hawthorn | 2.7 | 8.12 | 11.16 | 12.18 | 90 | Sat 11-Sep-1971 2:30 pm | M.C.G. | 99,822 | |
| St. Kilda | 1.4 | 4.5 | 7.7 | 12.16 | 88 | Hawthorn won by 2 points | |||
prelim
st kilda v richmond