Snooker: O'Sullivan in impressive early form
The three-time champion was at his best as he took a 7-2 lead over Dominic Dale, the Vienna-based Welshman last night.
Meanwhile, seven-time winner Stephen Hendry admitted he "got out of jail" against Joe Perry after winning 10-9 in the first round.
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Hide AdHendry said: "If I win this thing I might still contemplate retirement. I've got a big decision to make at the end of the season."
But, in a mixed day for Scots, China's Ding Junhui clinched his place in the second round with a 10-2 victory at the expense of Jamie Burnett while Stephen Maguire, the world No.?7 from Glasgow, crashed out in a late-night finish as he suffered a 10-9 defeat against qualifier Barry Hawkins..
Peter Ebdon, the 2002 champion, is making his 20th consecutive appearance at the Crucible, having made his debut in 1992.