I remember during our first title winning season listening to Talkshite the morning after we had lost for the first time that season, 2-1 away at Chelsea. Mario had put us 1-0 up after 90 seconds and Silva was denied the clearest penalty you will ever see about 10 minutes later. Clichy was red-carded for two nothing fouls and Chelsea got away with foul after foul. Finally a ball was blasted at Lescott IIRC whose arm was up and Clattenburg gave a penalty. For them, every foul was a hard tackle and for us every hard tackle was a foul.
Anyway, on Talkshite the next day they had a talking head on, as they do, from one of the betting firms, who said that a very big bet had been put on Chelsea to win very shortly before the kick off.
Coincidence that a huge bet on a Chelsea win goes on shortly before a referee with a questionable financial history makes a series of decisions that all seem to favour one team?
Maybe, maybe not.