Wigan Athletic boss Roberto Martinez believes Emile Heskey should have been sent off during their 1-1 draw with Aston Villa.
The Villa striker barged ref Mike Jones in the first-half, but escaped caution.
Martinez said: "I didn't see the incident but the players are adamant his reaction was out of order and it should have been a red card.
"I know Emile really well. He is a true pro, a fantastic player, and he showed the passion that he brings with football.
"Unfortunately in those moments, if you don't keep your cool, you can get a red card.
"At the moment decisions don't seem to be happening for us. It would have been a key moment in the game."
