SHEFFIELD, England - Five-time champion Ronnie O'Sullivan bowed out of the World Snooker Championship on Wednesday after spurning a shot at a 147 break during a 13-10 quarterfinal loss to China's Ding Junhui.

O'Sullivan looked to be on course for a maximum break after potting 12 reds and blacks, but then opted to pot the pink over a trickier black before clearing for a 146.

It took him to 11-9 down, but fourth seed Ding held firm, finishing off with a cool 117 to set up a repeat of last year's final against Mark Selby.