The worst I can remember is the European Cup semi-final against AC Milan in 1969. We were 0-2 down after some dodgy decisions in the San Siro. United, playing in white at home, tore into the Italians. Their goalie, Cudicini, was bombarded with shots. Best slipped Bobby in on the right and he hammered in a goal. 1-2 on aggregate. Then Denis Law put the ball over the line and turned away, arm raised, but a Milan defender - Hamrin if memory serves, hooked the ball out from the goal and the French ref waved play on. I saw the ball cross the line. Law saw it cross and so did the rest of the Stretford End. The ref must have seen it. Milan held out to meet Ajax in the final. We were robbed by a bent decision. Law wrote later that we would have probably beaten Ajax, who were on their way up but not yet a powerhouse, in the final. Milan beat them 4-1.