Graeme Dott beat Peter Ebdon 10-6 in the first round of the World Championship - a match that took over seven hours to complete.
Ebdon, trailing 6-2, took four frames in a row before Dott won the last two.
The doughty Scot resumed at 8-6 up on the first available table once Monday's evening matches had concluded.
Officials called a halt to their morning session and the players came back in the evening, with Dott winning the two frames he needed to advance.
The longest first-round match in Crucible history saw the late Eddie Charlton beat Cliff Thorburn 10-9 in 1989 in 10 hours, 24 minutes.
Ebdon, whose highest break was 39, showed his trademark battling qualities to edge the first four frames before a brave clearance saw 2006 champion Dott take the 13th on the black, and a run of 50 saw him move two clear before play ended ahead of the afternoon matches.
But a late-night finish to proceedings was avoided, as the players came back for the extra session, with Dott taking the 15th and 16th frames, including a century, to go through. The Scot will face 2005 champion Shaun Murphy in the second round.