Steve Bruce has revealed that Chris Kirkland suffered an injury during Wigan's Austrian training camp.
The goalkeeper's back problem flared up and he was forced to sit out the friendlies against Barnsley and Sheffield Wednesday.
Kirkland missed only one league game last season and Bruce will be hoping that he recovers in time for Wigan's Premier League opener against West Ham on 16th August.
"Kirky hurt his back while we were on tour, that is a bit of a concern to us," Bruce told the Wigan Evening Post.
"We've also got Paul Scharner injured at the moment. He twisted his ankle in the Barnsley game but at the moment we don't think it is too severe.
"We'll probably know more about Scharner this week.
"Lee Cattermole also twisted his ankle at Sheffield but we think he'll be okay - it's not a bad one, thankfully."
Wigan continued their encouraging form with a 3-2 victory at Hillsborough on Saturday, with summer signing Amr Zaki scoring a last-gasp winner.
Bruce was pleased with the display but feels it would be dangerous to become overconfident ahead of the new campaign.
He explained: "It was a good workout and in the last couple of games we've not had any problems scoring goals.
"It was nice to see Zaki come on and score. That will have done him good and hopefully there is more to come from him.
"Pre-season is all about getting through the games and I'll tell you a week on Saturday at West Ham whether I think we have moulded together nicely.
"I've been in the game long enough not to get too carried away by friendly results.
"Sometimes you think you're doing great and then you lose your first match of the season.
"But we're looking okay at the moment, I was pleased with how Daniel de Ridder and Olivier Kapo played at Sheffield Wednesday.
"I feel we've strengthened the squad with the four or five signings we've made. They've brought some extra quality in, which is what I set out to do."