Kilkenny's David Morris has reached the last 16 of a ranking event for the first time after defeating Gerard Greene 5-2 in the Wuxi Classic in China.
Breaks of 77, 51 and 103 proved crucial for the Irishman who will now play Ali Carter in the next round.
Neil Robertson and John Higgins safely negotiated their passages into the last 16.
World number one Robertson reeled off the last three frames to ease out Martin Gould 5-2, while Higgins was a 5-1 winner over Dechawat Poomjaeng, who proved a crowd favourite at the World Championship in Sheffield in April.
"I feel as if I'm steadily improving as the tournament goes on" - Neil Robertson
Runs of 86, 88 and 77 gave China Open champion Robertson the spoils this afternoon before the Australian sent a warning to his rivals.
"After the interval I had a positive frame of mind and I didn't miss a ball in the last three frames," he said to www.worldsnooker.com. "I feel as if I'm steadily improving as the tournament goes on."
Higgins lost the first frame against Poomjaeng today, but the Scot quickly recovered and breaks of 138, 70, 55 and 75 saw him saunter through to the next round.
Former two-time world champion Mark Williams edged out plucky Jack Lisowski in a final-frame thriller.
Williams lost three of the first four frames against Lisowski, who made his Crucible debut earlier this year, but the 21-year-old was powerless to stop the loss of the next two frames and although he took the match to a decider, the Welshman ultimately prevailed.
Home favourite Cao Yupeng also battled back from 3-1 down to win 5-4 against World Championship finalist Barry Hawkins
"Maybe I woke up too early so I was sleepwalking during the first half of the match, but I played better after the interval," said Cao.
Matthew Stevens advanced courtesy of a 5-3 triumph over Liang Wenbo, Anthony Hamilton cruised past Stuart Bingham 5-2 and Jimmy White failed to build on his win over Ricky Walden after suffering a 5-3 loss against Robert Milkins.
Peter Lines and Ben Woollaston eased past Andrew Higginson and Joel Walker 5-2 respectively, while Mark King squeaked past Marco Fu, who battled back from 4-1 down