Highlights from Leo Santa Cruzs fifth round technical knockout over Kiko Martinez on SHOWTIME CHAMPIONSHIP BOXING. SHOWTIME Boxing on .br SHOWTIME Sports televises undefeated three-division champion Leo El Terremoto Santa Cruz as he defends his featherweight title against hard-hitting Kiko .br Undefeated 3-division world champion Leo Santa Cruz gets to work in the 5th round and defeats Kiko Martinez via TKO in their featherweight bout on .br Leo Santa Cruz vs Kiko Martinez February 27th on SHOWTIME CHAMPIONSHIP BOXING.