1972-06-10 Jose Napoles w rsc 2 (15) Adolph Pruitt, Monumental Bullring, Monterrey, Mexico - WORLD
1972-06-10 Jose Napoles w rsc 2 (15) Adolph Pruitt, Monumental Bullring, Monterrey, Mexico - WORLD. Referee: Octavio Meyran. Taking control from the opening bell, Napoles (146) quickly set about Pruitt (143½) with solid hooks to head and body and inflicted a bad cut over his challenger’s left eye before the end of the first round. There would be no let up for Pruitt as Napoles went to work with the left jab being concentrated on the injured eye and at 2.10 of the second the referee deemed it to be too serious for the American to continue. Pruitt hadn’t been off his feet, but the referee felt there was no way back for him.
Having failed to get Napoles to give Billy Backus a return, following the latter's win on points over 12 rounds against Danny McAloon at the War Memorial Auditorium, Syracuse, New York on 14 April 1972 the New York Boxing Commission announced that they had matched Backus against Hedgemon Lewis for their version of the title.
Despite being the best man at the weight, Napoles was now finding it more and more difficult to make 147lbs and following a non-title fight in early August both the WBA and WBC allowed him time out as long as he defended his title against either Roger Menetrey, the European champion, Hedgemon Lewis or Ernie Lopez before mid 1973.