Y'know Starr is right.

Tactically Barrera's crew got it right and Naz didn't. Barrera has often said it was mentally probably his toughest fight because they had a strict gameplan to stick to, which was essentially, back off and make Hamed lead, do not get involved and leave yourself open to bombs. When barrera got a little enthusiatic and began to trade I think it might have been about round 5 or 6 his corner gave him a slap for doing what he want is more his thing.

By this time in Naz's career he was relying on single shots and I don't think having Manny in the corner made any difference as it appears naz didn't listen to him while training anyway.