Shaun Murphy and Wu Yize were involved in an awkward stand-off just moments before the start of the World Snooker Championship final. Murphy went into this year's Crucible showdown with high hopes of winning a second title, over two decades on from his previous triumph. Wu, meanwhile, is bidding to become the second Chinese champion in as many years, following Zhao Xintong's victory last time around.Before the start of the final on Saturday, the two players were introduced to the crowd by emcee Rob Walker and made their way to the table. They both appeared in good spirits and smiled…