Rotherham defender Dale Tonge has been sent for a scan on a foot injury which kept him out of Tuesday's win over Dagenham.
The full-back sustained the problem in Saturday's defeat at Darlington - his first start since November after only just recovering from a metatarsal injury.
The new injury is on the same foot as the previous problem, and after feeling discomfort in training on Monday, Tonge was unable to play against the Daggers.
"He was suffering some pain on Monday and wasn't able to train and there was obviously something wrong because he's not the type to pull out," boss Ronnie Moore told the Star.
"With it being the same foot as the previous injury we decided to get him scanned, and now we're awaiting the news and let's hope he'll be okay."