Wigan Athletic boss Roberto Martinez admits they've struggled to live up to their previous victory over Aston Villa this season.

Wigan have failed to live up to expectations having destroyed Martin O'Neill's side on the opening day of the season. They are one of only two clubs - Liverpool becoming the other last week - to win at Villa Park this season.

Martinez knows it will be even tougher this time around.

"It was a good performance on the day. Liverpool are the only other team to beat Villa at their place and, believe me, you have to be perfect to beat a team like Aston Villa," said the Spaniard.

"Now it is no different. They are still in a great moment, are involved in two cup competitions and they have been flying high in the Premier League. I don't think there is a good or bad moment to play a good side. They have got great strength in their squad and world-class players.

"They are very well balanced and organised and are a strong group who have been working together for a long time. With the pace and counter-attacking ability they have it should be a well stretched game between two teams who play football in the right manner.

"I think it will be more down to us. If we can be as good as we have shown at times in the first half of the season then we will give them a tough test - if we show our worst it is going to be very difficult."