Wigan defender Gary Caldwell will be handed a crucial role in the club’s survival fight with Antolin Alcaraz out for three weeks.
The club captain had deputised for the Paraguayan earlier in the season when he spent a lengthy spell out on the sidelines through injury, and Martinez believes he will seamlessly slot back in to the backline.
A hamstring injury picked up by Alcaraz will see him missing for a large chunk of the crucial run in and possibly even the FA Cup final meeting with Manchester City.
The Latics have five games to fight for their Premier League status, as they currently sit in 18th spot and three points adrift of safety.
“It is vitally important to have Gary back with all the experience he brings and he looked sharp and ready for the end of the season,” said the Spaniard.
“Antolin had the scans and he has a bit of a tear in his hamstring, which is what we expected, but we got fortunate he stopped playing at the moment he did.
“We will treat him and see how quickly he will respond but it will take the best part of three weeks.”
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