Penn fine tuning his striking.
Mayweather Sr said:"I’ll be honest, at first, it didn’t seem like he could fight that good. I mean, I don’t know about his ground game and all of that stuff, but he’s got some pop and in just the three days I’ve been working with him, he has improved, man."
Mayweather Sr said:"In his words, man, he told me, ‘I ain’t never seen some of this stuff you’re showing me, man.’ And that’s only after three days. BJ is learning fast, man. He's a good guy."