Manchester United defender Chris Smalling is adamant West Ham winger Dimitri Payet should have been sent off in their FA Cup sixth round 1-1 draw on Sunday.
The Hammers' star winger escaped a second booking when he went down in the box under a challenge from Marcos Rojo, but referee Martin Atkinson waved off his claims for a penalty.
Payet won a free kick minutes later and went on to give his side the lead with a superb effort beyond David De Gea's reach. United, however, got an equaliser through Anthony Martial on 83 minutes to force a replay.
"I've heard there was no contact and, to be fair, it should have been another yellow card," Smalling told the Manchester Evening News.
"But there are many decisions in a game and it's one that didn't go our way.
"I think if they're not going to give a penalty, then it has got to be diving, really, hasn't it?"
"I think more often than not, if you dive, you do get a yellow card. Obviously on this occasion it didn't happen but we won't pin the game on the one decision.
"But it is frustrating for us and obviously they punished us with a very good free kick."
The winner of the replay on March. 23 will go on to face Everton for a spot in the FA Cup final against Watford or Crystal Palace.