Rooney was only a confirmed starter on Friday evening after he had tried out a strange looking cushioned head guard to protect the area where he had 10 stitches following a training ground collision with Phil Jones.
"It was a difficult decision," said Moyes.
"We got the headband on Friday and we wanted to see how he felt with it. If I thought he could wear it I would try and get him out.
"He tired a little bit in the second-half but I wanted to get the 90 minutes out of him because he lacks match practice.
"It helped him towards the overall goal of getting him match sharp."
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