He's well-known for his serious side but Andy Murray has donned a smile to raise awareness of Motor Neurone Disease.
The Wimbledon Champion is supporting the Laugh to Cure Motor Neurone Disease campaign.
The disease causes damage to parts of the nervous system, progressive weakness and muscle wasting.
The condition claimed the life of Celtic star Jimmy Johnstone, who died in 2006.
Former Rangers player Fernando Ricksen recently revealed that he has also been diagnosed with the condition.
Andy's mum Judy Murray tweeted: "Here's @andy_murray laughing to cure mnd. Yes, yes do not adjust ur screens... he is smiling... #laughtocuremnd."
Fellow tennis player Victoria Azarenka tweeted: "#letsdothis help and spread awareness @LaughToCureMND Motor Neurone Disease, a great cause supported by everyone at the #WTA 'laughtocureMND."
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules hereComments are closed on this article