Choosing the top knockout of 2015 was akin to asking the mother of a brain surgeon, rocket scientist and fighter pilot to pick her smartest kid: There’s no easy answer, and no wrong answer.
Prefer a stunningly swift fight-ending shot from a guy not known for his power? You had the lights-out overhand right from Gabriel Bracero—he of four knockouts in 25 previous fights—that put Danny O’Connor to sleep 41 seconds into their October 10 bout.
Partial to multiple-punch flurries that hit the bull’s-eye in almo