We have to give Hagler the benefit of the doubt with zero KO losses and only one controversial down that he jumped up from without being hurt. We should assume that unless you're an elite heavyweight, you can't knockout a granite chinned guy like Hagler with 1 punch. Bean would need to land multiple punches to drop Hagler, which gives Hagler the opportunity to block, slip, counter, or hit back. He has the advantage in speed, technique, timing, and the southpaw stance. If it's only 4 rounds, I think Hagler would not only survive, he might win.
I know, right? For Bean to have any hope in hell he needs to seriously beef up for this one - get some meat on them bones. Gee, just because Bean KO’d that jacka** Johnny Knoxville - suddenly he’s a world beater. They edited out the part where the bobbing/weaving Wee Man beat the living sh*t out of Esch in sparring preparations.