2012 Snooker China Open enters its 2nd round Ronnie O'Sullivan of England reacts during the second round match against Mark Williams o...

2012 Snooker China Open enters its 2nd round

Ronnie O'Sullivan of England reacts during the second round match against Mark Williams of Wales at the 2012 Snooker China Open in Beijing, China, March 29, 2012. Ronnie O'Sullivan won 5-1 to enter the quarterfinals. (Xinhua/Gong Lei)

Ronnie O'Sullivan of England competes during the second round match against Mark Williams of Wales at the 2012 Snooker China Open in Beijing, China, March 29, 2012. Ronnie O'Sullivan won 5-1 to enter the quarterfinals. (Xinhua/Gong Lei)

Mark Williams of Wales competes during the second round match against Ronnie O'Sullivan of England at the 2012 Snooker China Open in Beijing, China, March 29, 2012. Mark Williams lost 1-5. (Xinhua/Gong Lei)

Judd Trump of England competes during the second round match against Stuart Bingham of England at the 2012 Snooker China Open in Beijing, China, March 29, 2012. (Xinhua/Gong Lei)

Judd Trump (L) of England reacts during the second round match against Stuart Bingham of England at the 2012 Snooker China Open in Beijing, China, March 29, 2012. (Xinhua/Gong Lei)

Ronnie O'Sullivan won 5-1 to enter the quarterfinals at the 2012 Snooker China Open in Beijing.