Welsh Open: Ronnie O'Sullivan through, but rest of world's top four out
|Welsh Open on the BBC|
|Dates: 26 Feb- 4 Mar Venue: Motorpoint Arena, Cardiff|
|Coverage: Live television coverage on BBC Two Wales, BBC Red Button and online|
Ronnie O'Sullivan is the only world ranked top-four player through to the last 32 of the Welsh Snooker Open.
He beat Graham Dott 4-0 while China's Liang Wenbo beat world number one Mark Selby 4-3.
There were also shock exits for world number three Judd Trump and world number four Ding Junhui, who lost 4-1 to Noppon Saengkham and Liam Highfield respectively.
Defending champion Stuart Bingham beat Welsh 16-year-old Jackson Page 4-2.
Five-time world champion O'Sullivan made light work of Scotland's Dott and will face David Grace on Thursday.
Welshman Mark Williams' match against Aditya Mehta went down to a decider, with Williams taking the final frame to face Martin Gould in round three.
Fellow Welshman Matthew Stevens is also through after beating Scott Donaldson 4-2, and will play Bingham next.
The 2016 runner-up and 2010 world champion Neil Robertson is out after losing 4-3 to Ian Burns, as is Welshman Dominic Dale who lost 4-2 against John Astley.
The final session of the day saw Scotland's John Higgins beat compatriot Stephen Maguire 4-1, while Liang saw off Selby in a game that finished after 01:00 GMT.