Petr Cech claims Aston Villa's winning goal against Chelsea should have been disallowed.
Villa came from behind to shock Chelsea at Villa Park with James Collins netting the winner in the second half after Richard Dunne had cancelled out Didier Drogba's early opener.
Blues boss Carlo Ancelotti bemoaned the fact Chelsea conceded both goals from corners and Cech felt Collins' winner should have been ruled out for an infringement by John Carew on him as he came out to catch the corner.
"Two corner kicks, which we failed to defend, decided the game," Cech told his official website
"During the second one the crucial thing was that, while I was going to catch the ball, I was unpermittedly pulled by the jersey and by my right hand by [John]Carew, who stopped me from catching the ball before (James) Collins.
"Otherwise I would have easily collected the ball and had it under control.
"It is a pity that we have dropped the points, because mainly in the second half we had a lot of opportunities to at least equalise. However, that did not happen."