Welsh Open: Judd Trump knocked out by Mark Williams
Wales' Mark Williams beats world number six Judd Trump 4-1 to reach the quarter-finals of the Welsh Open in Cardiff.
World number 16 Williams doubled a red into the middle pocket before sealing the win with a break of 56.
The two-time world champion, 39, is through to the last eight for the first time in four years.
"I just outplayed him really and kept him under pressure from the off," said Williams.
"That's what you've got to do with him [Trump], otherwise he'll steamroller you."
Williams, who has previously won the event in 1996 and 1999, raced into a 3-0 lead against Trump.
He had chances to win the fourth frame before the Englishman took it 66-61.
Despite missing the opportunity to complete a whitewash, Williams was happy.
"Overall I can't be disappointed with that performance it was quite good," he said.
"I'm just glad to be through."
Williams had hoped to meet fellow Welshman Matthew Stevens in the quarter-finals.
But Stevens, who knocked out world number two and defending champion Ronnie O'Sullivan in round three, went down 4-2 to world number 11 Marco Fu.
Meanwhile, world number one Mark Selby lost his last-16 match to Belgian 19-year-old Luca Brecel 4-3.
Brecel will now play Ricky Walden who triumphed over Stuart Bingham 4-2.
John Higgins secured a place in the quarter-finals with a 4-2 victory over Michael Georgiou.
The world number 14 will face 16th-ranked Stephen Maguire, who beat Alan McManus 4-0.
Ben Woollaston reeled off two consecutive century breaks on his way to a 4-2 victory over Ali Carter.
Woollaston will take on Gary Wilson for a place in the last four after the world number 61 came back from 2-1 down to world number four Neil Robertson 4-2.