PRETORIA, South Africa (AP) _ Julio Cesar Borboa, Los Angeles, stopped Jaji Sibali, South Africa, ninth, to retain his IBF junior bantamweight title; Nate Tubbs, Cincinnati, stopped Corrie Sanders, South Africa, second, heavyweights.

BELFAST, Northern Ireland (AP) - Chris Eubank, 167 3/4 , Britain, outpointed Ray Close, 168, Northern Ireland, to retained his WBO super- middleweight title. Julio Cesar Vasquez, 153 3/4 , Argentina, stopped Ahmet Dottouev, 153, Russia, at :47 of the 10th, to retain his WBA light- middleweight title.