Mexico's Rafael Marquez retained his IBF and IBO bantamweight championships by stopping South Africa's Silence Mabuza with a steady beating in the ninth round on Saturday night.
Marquez (36-3 with 32 knockouts) used his jab effectively and followed up with rights to the head of Mabuza (19-2).
Referee Tony Weeks stopped the contest after Mabuza's corner threw in the towel.
"He's a great fighter. He has a great punch, but I was surprised he came right back. He threw some punches but I got my second wind and it shows my strength," Marquez said.