Wigan Athletic manager Roberto Martinez has lamented the performance of the match officials during his side's 4-0 defeat at Manchester United in the Premier League.

The Spaniard believes that Danny Welbeck should not have been given a penalty and that the United striker should have been sent off for a bad challenge on Franco Di Santo.

"I have come to United three times before today and for whatever reason we don't seem to be measured in the same manner as the team at home," Martinez is quoted as saying by Sky Sports.

"Today the penalty is as bad a decision as you are going to see in the Premier League. In many ways, you feel as though you are fighting against a mountain.

"There were tackles flying around that if they had been the other way round there would have been a couple of red cards."

Martinez further explained why Welbeck should have been dismissed.

"For Danny Welbeck's last challenge, his foot was over the ball on Franco," he said. "It is completely reckless.

"Under the new regulations you cannot do that. It is a red card, for a Wigan player, Manchester United, everyone."

Wigan are currently 13th in the league table with four points from four matches.