It would depend on McCall, if he trains and wants to win, Spinks wouldn't have anything to keep him off. If McCall just shows up for a paycheck, Spinks could probably out point him.
spinks, lopsided decision. He'll force Oliver to use those legs for almost the complete round. And force McCall to hit a moving target. Talk about a woeful connect %, Oliver might be landing 5 or 6 punches a round and hardly any clean. His chances are so much better with a stationary target and if he would throw body punches. Futch would have scouted McCall perfectly and he had a fighter that listened and followed instructions.
Spinks easily. Unless Oliver lands a bolt from the blue, but chances are he loses by a very clear decision.
The McCall who beat Holmes and Lewis would eventually catch up to Spinks and knock him out imo. Otherwise, Spinks wins a unanimously boring decision.
You have to back Spinks on most ocassions to decision McCall. But there is always the off chance of something big landing and Spinks being turned into bambi on ice.