Maidana Moments: Josesito Lopez

Showtime Boxing: Marcos Maidana is perhaps the most ruthless puncher in boxing today. With 31 vicious knockouts in 35 wins, Maidana holds the highest KO percentage of any of Floyd Mayweather's opponents. EVER. Don't miss Mayweather vs. Maidana 2 - Saturday, September 13, live on SHOWTIME PPV. #Mayhem