Mark Williams v Michael Holt: Two-time champion eases into last eight
Mark Williams eased through to the quarter-finals of the World Championship with a 13-8 victory over Michael Holt.
The two-time world champion was not at his break-building best - his highest effort being 77 in the final session - but did enough to get past Holt.
He will now face Judd Trump or Ding Junhui in the last eight.
Frame scores: 67-5 (50), 30-80 (75), 1-120 (109), 77-61 (56 Holt), 59-21 (58).
Mark Williams was in unstoppable form as he won six out of the eight frames in the second session of his second round match against Michael Holt.
Having come back from 4-1 down to share the opening session 4-4, Williams took the opening two frames of the evening with breaks of 87 and 61.
Holt got back on terms, making an 83 as he did so, to leave the match poised at 6-6 during the interval.
But when the players returned to the table it was one-way traffic, Williams outscoring his opponent 309-65 to put one foot in the quarter-finals.
Williams has not made that last four in half a decade - and indeed that run to the semi-final in 2011 was an anomaly for a man who'd not been beyond the second round since 2006.
But the Welshman showed excellent form against the man who knocked out Neil Robertson: since trailing 4-1 in the first session, Williams has gone 9-2 against an opponent whom he also counts as a close friend.
Second session: 87-0 (87), 67-16 (61), 11-84 (83), 42-65, 69-25 (64), 82-10, 76-30, 80-0 (68).
The Welshman lost the opening three frames and was not cueing well, before hitting back to claim the fourth frame before the mid-session interval.
Holt then compiled a gritty break of 62 but then missed chances to take a decent advantage into the second session, with WIlliams coming back to level the tie.
The winner of this match, which has featured no centuries so far, will take on Judd Trump or Ding Junhui in the quarter-finals.
42-68 (61), 23-71, 5-91 (68), 65-9, 0-72 (62), 81-33, 88-8, 72-38