John Higgins through as Graeme Dott rolls back years
Four-time champion John Higgins eased through to the last 16 of the World Championship, while Graeme Dott recaptured form of old as world number seven Ricky Walden became the first seed to tumble.
Higgins had a straightforward 10-5 success against Robert Milkins.
Dott, who conquered the Crucible in 2006 and has been runner-up twice, came from 7-6 down to win four of the last five frames to triumph 10-8 and set up a last 16 clash with Stuart Bingham or Robbie Williams.
"It was a good game," said world number 19 Dott.
"I played well and I'm delighted to win. At the start of the match, if you'd have told me that I was going to win after I was 3-1 down, I wouldn't have fancied it. I wasn't playing well at all.
"It was a kind of typical performance for me. I just hang in and hang in, and then eventually when the pressure is on I feel okay.
"I wasn't here last year which was a horrible feeling.
"I couldn't even watch the first week, I tried to avoid it.
"So it's nice to know that I can actually still do it at the Crucible," he added.
Ulsterman Mark Allen faces Ryan Day tomorrow.