Andy Murray challenged to swingball by Keith Lemon - video
The British number one was taken to a London rooftop overlooking Olympic Park to play against Lemon.
Watch the swingball game below:
Lemon can be seen taking a 2-0 lead before play is stopped after the swingball set is destroyed.
Post-match, Lemon humorously gave Murray advice on grunting noises and questioned why he rarely smiles.