He may be known for his dour on-court demeanour, but judging by the antics with his Davis Cup team-mates, Andy Murray is anything but miserable off the court.
The 27-year-old Scot was consumed by fits of laughter after appearing to accidentally let slip teammate Dominic Inglot's secret relationship on Sunday.
In an interview after their victory over the US team, Murray, who couldn't take part in celebrations because he had to catch a flight, was asked if the team would be having a drink on his behalf, to which he replied: "Dom's got a little girlfriend on the go here in Glasgow".
After putting his head in his hands in disbelief, Inglot said: "Oh no. You've actually landed me in this. You've actually landed me in this, because I actually have a girlfriend who's going to be watching this."