Former Manchester United manager Alex Ferguson was visibly upset when his team lost the 2011-12 Premier League title at the last moment, but the reaction of Sunderland supporters added another layer onto things.
Sunderland were United's opponents on the final day, when a Wayne Rooney goal decided the game in the favour of Ferguson's team. However, it wasn't enough, with late goals from Edin Dzeko and Sergio Aguero giving Manchester City the victory they needed against 10-man Queens Park Rangers
However, the decision from some home fans at the Stadium of Light to cheer for City left its mark on the United boss. It was still on his mind months later, when the Red Devils prepared to take on the Black Cats once more as they pushed to reclaim the title.
