Mark Williams, the 51-year-old Welsh snooker legend, faces a pivotal moment at the World Snooker Championship 2026 as he chases becoming the oldest ranking event winner in history. With a current world ranking of sixth, Williams has already set the record for the oldest player to win a ranking title at 50 in October 2024, defeating Ronnie O'Sullivan. His determination to surpass this milestone is tempered by ongoing health challenges, including deteriorating eyesight requiring imminent lens replacement surgery. "If it goes wrong, that's the end," he admitted, referencing a fellow player whose career was derailed by similar issues.