George Guest crossed gloves with one of boxing's greats
A 15-year-old boy has been talking about his surprise online match-up with one of boxing's top stars Floyd Mayweather.
It happened when schoolboy George Guest was getting a beating by a mystery opponent on his PlayStation 3 boxing game.
George told Newsbeat: "I've got all the moves. I'm the best out of all my mates. My punches are lethal. You'd be knocked out in two.
"I was fighting this guy online. I normally beat everyone but this time I started to get weak.
"He started jabbing me in the face and laughing on the headset to me. Then bang - he put me on the floor."
When George jokingly sent a message to his opponent saying: "Who do you think you are, Ricky Hatton?" he got the reply: "Actually I'm Floyd Mayweather."
American boxer Mayweather beat Hatton in 2007
George was doubtful about his opponent's identity until he started sending pictures - including one of the boxing legend with Ricky Hatton.
Mayweather is considered one of the best boxers of modern times, having won world titles in five different weight classes.
That didn't stop George's mum Yvonne having a bit of a dig.
When she found out who George had been sparring with online she said jokingly: "If he came round here I'd lay him out!"