Oldham defender Sean Gregan faces a spell on the sidelines through injury.
Gregan picked up a knee injury in training earlier this week.
Scans have shown Gregan has damaged ligaments to his knee joint and that he faces a couple of weeks out of action.
Gregan is now set to miss the upcoming games against Millwall and Port Vale.
The news is a blow for Oldham boss John Sheridan as he looks to maintain his side's push for promotion.