By Dan Warren BBC Sport at the Crucible

I'd never won a game at The Crucible before this year Marco Fu

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 McManus on Fu

"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."