The world champion boxer—winner of 29 bouts, collector of 24 knockouts and sufferer of only one defeat, delivered by another elite champion—understands his world. But despite all the baked-in machismo ...

"That put a chip on my shoulder," Sweeney said. "So, I was always getting in trouble; I was always fighting. ... She raised me the best she could, but I was always looking for a family." Sweeney ended ...