Williams restores paritypublished at 14:53 Greenwich Mean Time 13 January
Williams 2-2 Ding
Could we be heading for a final-frame decider.? A half century helps Mark Williams get back to 2-2 at the mid-session interval.
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Last 16, best of 11 frames
RESULT: Mark Selby 6-1 Ali Carter
RESULT: Mark Williams 5-6 Ding Junhui
Taking place at Alexandra Palace
Williams 2-2 Ding
Could we be heading for a final-frame decider.? A half century helps Mark Williams get back to 2-2 at the mid-session interval.
Williams 1-2 Ding
Ding Junhui capitalises on a miscue from Mark Williams on the blue and takes the frame with a break of 69.
Williams 1-1 Ding
Mark Williams gets a frame-winning lead and puts Ding Junhui in a snooker. And with that the Welshman is back on terms.
Williams 0-1 Ding
A tense opening frame eventually goes Ding Junhui's way.
Both players had chances there. Neither has quite settled yet.
BBC Two
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Williams v Ding
Both Mark Williams and Ding Junhui have won the Masters previously.
Williams was victorious back in 1998 and 2003 and most recently reached the final in 2023, when he lost to Judd Trump. Meanwhile, Ding triumphed back in 2011.
Neil Robertson produces a stirring fightback from 5-1 down to defeat fellow two-time champion John Higgins 6-5 at the Masters.
Read MoreThere is live action from every round of the 2025 Masters on BBC TV and you can watch uninterrupted coverage on BBC iPlayer, the BBC Sport website and the BBC Sport mobile app, with additional coverage on BBC Red Button.
BBC Sport
Get Inspired: How World Snooker is helping build confidence in the community
Whether you choose to play competitively or socially, snooker is sure to get your brain working.
It requires skill and concentration and will improve your focus and hand-eye coordination. Anyone can play regardless of age, gender or ability and it's not an expensive sport to get into.
Snooker is essentially a simple sport, once the rules of the game have been learnt - to do just that click here, external.
And a great way to start taking part in snooker is through a local snooker club.
English Partnership for Snooker and Billiards provides a club finder, external, to locate your local snooker venue.
To find a club in other areas of the UK please contact the national snooker federations of Scotland, Wales or Northern Ireland.