Aberdeen began the second half in a much more positive manner but it took a tactical change by Dons' boss, Alex Ferguson to change the match. The hard tackling of Neale Cooper was introduced for Dougie Bell with an hour gone and his first contribution led to a sensational equaliser. He dispossessed Peter Grant in midfield and passed to McKimmie who was immediately barged off the ball by McLeod. From the resultant free kick taken by Porteous, Captain Willie Miller swooped to head a magnificent header past the despairing hands of Bonner into the net via the inside of the far post. The huge home support were ecstatic as Miller's team mates almost suffocated him after they eventually caught up with him and pummelled him to the ground. After that there was no way back for Celtic as the Dons denied their opponents any time or possession and at the final whistle the Aberdeen players rejoiced and duly obliged their support's demand with a lap of honour.
Source: Match Programme, 24th August 1991