Manchester United boss Sir Alex Ferguson thought his side should have had a penalty before Chelsea scored their winning goal in Saturday's FA Cup Final.
Ferguson felt Michael Essien fouled Ryan Giggs in extra-time, before Didier Drogba's late strike ensured the Blues clinched their fourth FA Cup Final success.
He said: "It's a penalty kick. To lose a game and see that is disappointing.
"We couldn't see where we were but when I see it now it's a penalty. The referee should have been in a better position to see that.
"There was a bit of tiredness The number of games they played eventually gets to them. It was the same for both but I think in two or three positions we were tired.
"The pitch was slow, maybe that didn't help but from our point of view we were tired.
"There was nothing between the two sides. Neither deserved to win or lose and we are disappointed we have lost.
"It has been exceptional what they have been through - we just couldn't cross the line."