Qualifier Mark Selby continued his superb form at The Crucible as he reached the quarter-finals with a 13-8 win over former champion Peter Ebdon.
Selby has never made the last eight at The Crucible before
Selby laid the foundations for the win with a brilliant display in the second session, scorching into a 10-6 lead thanks to three centuries in a row.
Ebdon closed in with an 86 in the 17th frame, but Selby held his nerve as runs of 130 and 116 kept him well in front.
A 97 kept Ebdon's hopes alive before Selby's 72 effectively won the match.
Ebdon needed two snookers and played on for some time to get one back, but a fluked green from Selby finished the match off.
But Selby fully deserved the victory, having made five excellent centuries over the three sessions.
His three consecutive centuries during the second session on Monday equalled the Crucible record of former champions Ronnie O'Sullivan and John Higgins.
"That's probably the best match I've played in my career," he said.
I never really turned up this year
"It's also a great achievement for me to have become only the third person to have made five centuries in a best-of-25 match.
"I knew Peter would fight to the end - even if he was 12-0 down he'd keep fighting. I was getting more and more nervous near the end."
Ebdon held his hands up, admitting he had not played anywhere near the level he had hoped to.
"Mark played tremendously well and thoroughly deserved to win - he played the better snooker," said Ebdon.
"I never really turned up this year which is very disappointing. My preparation was meticulous and I expected to play a lot better.
"I've been playing extraordinarily well in practice. Perhaps I've left my form on the practice table."
The 23-year-old will take on Ali Carter in the next round.
Peter Ebdon (Eng) 8-13 Mark Selby (Eng)
54-63 57-50 6-85 (57) 1-100 (76) 72-0 (66) 71-0 (62) 89-1 (60) 0-69 (57) 38-68 0-121 (100) 0-126 (122) 0-123 (119) 76-20 (69) 54-59 79-16 45-57 86-33 (86) 0-130 (130) 6-116 (116) 97-0 (97) 49-83 (72)