Ronnie O'Sullivan moved into the Welsh Open quarter-finals with a comfortable 5-1 win against Mark Selby.
O'Sullivan powered into the quarter-finals
O'Sullivan, who vowed to rebuild his game despite thrashing Ian McCulloch on Wednesday, has turned to coach Frank Adamson to help regain his best form.
"I can't afford to go to the World Championships just hoping that my game is there," said O'Sullivan, who now faces Neil Robertson.
"I need to do something about it and try to look for consistency."
Robertson was too strong for Stephen Hendry, beating the seven-time world champion 5-3.
Steve Davis rolled back the years to knock out world champion Graeme Dott.
Davis won 5-3 and revealed he needed to go and find a bed after checking out of his hotel on Thursday morning because he assumed he would lose.
"To beat the world champion and someone who's put me to bed a few times in recent years is great," said Davis.
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He now faces Anthony Hamilton, who beat Dave Harold 5-3, while Shaun Murphy defeated Jamie Burnett 5-4 and goes on to meet Stephen Maguire, who was a 5-3 winner over Ken Doherty.
Andrew Higginson was too strong for Michael Judge and his 5-1 win means he now faces Ali Carter, who fought back from a 3-0 deficit to beat Nigel Bond 5-4.
O'Sullivan's new coach Adamson has already worked with several top players, including last year's Welsh Open champion Stephen Lee.
But O'Sullivan did not give the impression of being a player in need of advice during his match against Selby.
After stealing the first frame via a left-handed black, O'Sullivan made a 70 break in the second and led 3-1 at the mid-session interval.
The Englishman then only needed only 20 minutes after the re-start to rattle through the next two frames with breaks of 100 and 80.