By Dan Warren
BBC Sport at the Crucible
Marco Fu held his nerve to upset 15th seed Alan McManus 13-7 and set up a quarter-final against Stephen Lee.
The qualifier from Hong Kong triumphed over the out-of-form Scot in a match full of safety-dominated frames.
With Fu leading 10-6 overnight, McManus soon reduced the deficit, but a break of 75 put Fu within sight of victory.
The world number 27 then rattled in a 57 break, and when McManus missed a straightforward brown in frame 20, Fu took full advantage to clinch the match.
Fu said beating McManus to secure a quarter-final spot at The Crucible was a "dream come true".
"Getting through is great considering I had never won a game at The Crucible before this year," said the Hong Kong player after his 13-7 triumph.
"I have worked a lot on my safety and that is important if you want to beat Ronnie O'Sullivan and McManus".
I am sure he will give Stephen Lee a lot of problems in their quarter-final
"It's been a tough time for the people back home with the Sars virus, so hopefully this will raise a smile."
McManus admitted the best player had won after Fu ended his World Championship hopes.
"I just could not get into it. I missed a couple of pots and, although Marco didn't play great, he was better than me," the Scotsman said.
"It's a bit of a surprise he hasn't won more matches at The Crucible because he's an established player."
"I think he is in with a chance and I am sure he will give Stephen Lee a lot of problems in their quarter-final."
Second round result:
Alan McManus (Sco) 7-13 Marco Fu (HK)
116-6 (99), 64-24, 45-73 (73), 11-54, 127-4 (127) 58-63, 36-64, 25-66, 7-118 (71), 75-56 (73), 65-56, 39-71, 48-62, 65-31, 42-56, 21-79 (58), 87-44, 0-75 (75), 14-69 (57), 40-71 (51)