Jimmy Kebe should be back in contention having missed the game against Everton, though Guthrie and Karacan remain sidelined.
With no new injury concerns, however, McDermott is likely to field an unchanged side to the one that picked up their first win of the season last time out.
Hal Robson-Kanu should start on the right with Morrison keeping his place alongside Gorkss at centre-back.
Wigan's home form has been poor this season, winning just once in the 6 league games they have played in front of their fans, but they face a Reading side yet to win on their travels, so something could give this weekend.
The visitors know that a win here would see them leapfrog their hosts and move further away from the drop having just escaped from the relegation zone with a win over Everton.
Martinez will be keen not to drop into the bottom three this weekend and will look to his side to control possession and cope with Reading's attacks from wide, with the home wing-backs needing to get through a lot of work.
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