What are the most calamitous substitutions in football history?

“During the Red Star v Maccabi Haifa match, Milan Pavkov entered the pitch in the 78th minute and scored an own goal in the 90th minute. Surely we’ve never seen a more catastrophic substitution before?” tweets @Terunoumi89.

Pavkov’s wretched own goal settled a cracking Champions League playoff, which had been heading for extra-time with the aggregate score at 4-4.

Incredible scenes last night as Milan Pavkov's last-minute own goal ensured Maccabi Haifa qualified for the Champions League group stages at the expense of Red Star Belgrade!