Paul Collier’s emotional refereeing retirement in World Snooker Championship final

Paul Collier referees his last professional match on Monday (Picture: Getty Images)It is an emotional day for Paul Collier as he referees a professional match for the final time in his fourth and last World Snooker Championship final.The 53-year-old is retiring from refereeing duty to concentrate on his role as tournament director for World Snooker Tour, going out in style at the Crucible.The Welshman is taking charge of the final in Sheffield between Kyren Wilson and Jak Jones and is set to rec