Roberto Martinez fuming at penalty decisions after Wigan's defeat by Arsenal

Martinez has seen his side suffer six defeats in eight matches

Wigan boss Roberto Martinez accused Theo Walcott of "buying" the penalty that gave Arsenal a 1-0 win.

Arsene Wenger's side clung on to a 1-0 victory after Mikel Arteta converted a second-half penalty when Walcott was brought down by Jean Beausejour.

And Martinez insists Wigan should have had a penalty of their own when the ball struck Gunners left-back Kieran Gibbs on the arm in the dying minutes - but referee Jon Moss waved play on.

"The (Arsenal) penalty was very very soft, if anything, I think. Theo Walcott is very clever there," said Martinez.

"It's difficult to tell if there is contact or not, and that doesn't mean it's a penalty, the contact has to stop you from staying on your feet.

"The player's got real experience and he knew a penalty would change the game and give them real hope of the three points and I thought he bought the decision.

"But whether it's a soft penalty or not, the disappointment is then in the other box you've got a clear handball. The ball travels a long distance and the arms are not in a natural position, and that's a penalty.

"And then at the other end if you want to give a penalty where the hands are not in the natural position... I'm really disappointed because the players don't deserve the feeling that they've got now.

"We are in the middle of a period where calls are not going our way and we've got a few players missing.

"I thought we played really really well. We played with a great mentality. The players displayed a big team mentality and I couldn't be prouder."