Mexico's Marco Antonio Barrera has retained his World Boxing Council super featherweight title after a comfortable win over Mzonke Fana.
Barrera was not even troubled by his South African rival
The South African challenger was knocked out in the second round of the scheduled 12-round fight in El Paso, Texas, on Saturday.
Barrera dominated from the oustet and floored his rival at 1:48 in the second with a brutal right.
Barrera has held the WBC belt since beating Erik Morales last November.
Fana, who had earned the title shot after a narrow split decision over Randy Suico last May, was some way of the calibre of Barrera.
The result took the Mexican's career record to 60-4, and the 42nd knockout of his career.
Afterwards he said: "It was a great victory against the top-ranked challenger. Now I'll take a break, and see what my promotor, Oscar de la Hoya, decides."
But asked if he was willing to fight Morales for a fourth time, Barrera added: "If that's what the fans want, I'm here."
On the under card, Fernando Montiel beat champion Ivan Hernandez by seventh-round KO to win the WBO super flyweight title.