Liverpool midfielder James Milner has admitted he is still bitter about a loss to Manchester United in 2010.
Milner helped Aston Villa take the lead in the game, but Wayne Rooney and Michael Owen gave United a 2-1 win.
There was a moment early in the game, where Nemanja Vidic could have been sent off, but the referee only gave a yellow card.
And Milner believes it was a turning point, even if he did score from the resulting spot kick.
Milner told The Big Interview podcast: "That's one memory you have: an early penalty that should have been a red but wasn't. Then, obviously it's a cup final, the pressure of taking a penalty and I scored it.
"But to be 1-0 up anyway, you'd like to think that you can go on and win it. It didn't happen.
"There is obviously that bitterness that I think it was a red card, really."