Former Wigan manager Paul Jewell believes the FA Cup holders have what it takes to shock Arsenal and reach the final.
The Championship side upset the odds to lift the trophy last season - beating Manchester City 1-0 in the final - and Uwe Rosler's men will need to be at their best when they face Arsenal at Wembley on Saturday.
Jewell, who led Wigan between 2001 and 2007, said of his former club: "It's been a brilliant journey.
"They must be the most difficult team in the country to try and predict the result. Again, this year they go to Manchester City and get a fabulous result and it was fully deserved.
"I'm sat here now and looking at the FA Cup trophy and who would have thought that Wigan would have even been in the Championship at one time? To be the FA Cup holders - it's just a brilliant, brilliant story.
"You can't predict with Wigan. Arsenal have had a few struggles since Liverpool beat them terribly and I watched the game on Sunday at Everton, they were very well beaten.
"I'm sure Uwe will be saying we've got to be careful with the wounded animal because they've had a bit of stick in the Press. But I look at the way Wigan have played this season and they're aggressive in their style of play, their movement is good and I think they have a chance.
"They're second favourites but Wigan have made complete nonsense of people betting on favourites with Manchester City in the final, Everton in the quarter-finals last season and Manchester City this year.
"Who's to say they can't get another one against Arsenal on Saturday? It's going to be tough but they'll go there with absolutely no pressure."