The cut was damaging yes, but Barrera looked totally outclassed in there. Too many miles on the old dog, and he's not a lightweight.
yeah i thought if prescott had enough to KO him that Barerra had enough left but freddy worked well with amir and got him to keep his distance and keep his gloves in high guard. he was too quick for old barrera.
He did indeed. The headbutt and resulting cut was brutal, but it didn't make Barrera slower and cause him to be woefully outboxed. Khan was very impressive.