George Groves has maintained his unbeaten record with a devastating right hand to stop Noe Gonzalez Alcoba in the fifth round at the O2 Arena.

Victory takes 25-year-old's professional record to 19 wins from 19 fights and 15 by way of knockout. It was his third of the year since joining Matchroom Sport.

Referee Terry O'Connor stopped the fight after Groves had landed flush on Gonzalez's chin, sending the Uruguayan to his knees before he got up and paced the ring gingerly.

Promoter Eddie Hearn said that he will look to get his fighter in action again in September.