Saturday night promises to be an epic rematch between WBA Featherweight Champion Leo Santa Cruz and three-division world champion Abner Mares. On Thursday, the fighters talked to SHOWTIME about their motivation, the challenges their opponent presented, whether they would seek a knockout, and if they were excited to be back on the big stage at Staples Center. Catch all the action tomorrow night starting at 10pm ET/PT, only on SHOWTIME Championship Boxing.