Lyle McCombs would have easily gained 1,000 yards if he had broken any tackles or made any defenders miss.
You can't blame that on the coaches. LM goes down on first contact on virtually every play. Great runners gain huge chucks of yardage after contact. LM simply did not. He got hit. He went down.
IMHO, McCombs didn't deserve many of the carries that GDL gave him. We should have rotated backs and made RB a competition.