Referee calls time too early in Bradley-Vargas clash (video)

Bradley had been on top for most of the exchanges against former super lightweight champion Vargas, although took a big shot at the end of the twelfth and was forced to cover up.

As Vargas piled on the pressure, Russell stepped in to apparently save Bradley, although the fight then went to the scorecards in California after the mistake was revealed.

Watch the video provided by HBO on a night when the network celebrated their 1000th televised fight.