Ronnie O'Sullivan will face He Guoquiang in his first match of the World Snooker Championship , while defending champion Zhao Xintong will take on Liam Highfield. Last year, Zhao became the first-ever Chinese player to emerge from the Crucible victorious. He destroyed Mark Williams 18-12 in a one-sided final in Sheffield. The bookies largely have the Chinese sensation down to win again, although the so-called 'Crucible Curse' may prevent him from retaining the title. No first-time world