They may be considered fierce rivals of one another, but tennis stars Roger Federer and Rafael Nadal have shown they get along just fine off the court.
In a video posted on Facebook by Queensland radio station Hot 91, Federer and Nadal appear sitting alongside each other to try and shoot an ad for a charity tennis match – on helium.
The pair try to keep a straight face throughout the shoot, but as soon as they open their mouths, they lose it completely and fail to deliver their lines.