Three-time world champion Mark Williams has revealed that he had to take oxygen during the interval of an exhibition event in Tibet as the Welshman struggled with the altitude. The 49-year-old posted a photo to social media wearing connected to a gas tank and wearing nasal tubes.

Mark Williams took part in an exhibition match in Lhasa, Tibet but required oxygen such were the conditions at altitude with the venue almost 12,000 feet above sea level

Mark Williams has been playing in a snooker event in Tibet and has sparked concern after taking to social media to share a photo of himself receiving oxygen

Three-time World Snooker champion Mark Williams requires oxygen during the interval of a match at an exhibition event in Tibet.

Mark Williams had to be hooked up to an oxygen tank during a snooker exhibition played in the spectacular setting of Lhasa, Tibet. The three-time world champion was joined by Judd Trump, Ding Junhui and Xiao Guodong at the Tianren Cup,