Ronnie O'Sullivan stayed on course for a record eighth UK title after beating Noppon Saengkham 6-3 in York.
O'Sullivan had to come from behind in a high-quality clash before wrapping up the match in style with a 120 break.
The 45-year-old will face either Kyren Wilson or Ben Woollaston in Friday's quarter-finals.
Northern Ireland's Jordan Brown is in action tonight against Anthony McGill.
