Following are the results of the snooker world championships here on Monday (best of 25 frames):

John Higgins, Scotland, bt Ricky Walden, England, 13-8

Barry Hawkins, England, bt Ronnie O'Sullivan, England, 13-12

Ding Junhui, China, bt Judd Trump, England, 13-10

Quarterfinals on April 26-27 (best of 25 frames)

Alan McManus, Scotland, vs John Higgins, Scotland

Mark Williams, Wales, vs Ding Junhui, China

Marco Fu, Hong Kong, China, vs Barry Hawkins, England

Mark Selby, England, vs Kyren Wilson, England