John Higgins quickly hauled himself level with Steve Davis in the final session of their epic second-round clash at the Betfred.com World Championship.
Higgins trailed 6-2 after the opening session and 9-7 after the second, and he stepped up his fightback with breaks of 70 and 115 - his 100th career Crucible century - to make it 9-9.
With four more frames needed for victory, the momentum looked to be firmly with the 34-year-old defending world champion, while 52-year-old six-time winner Davis was in urgent need of a decent spell at the table, rather than in his seat.
Higgins got going with a plant to the middle pocket which Davis inadvertently created for him when playing a safety roll-up shot, and it was the spur to a frame-winning break of 70.
Then Higgins completed his century of centuries, and Davis - this year making his 30th Crucible appearance - briefly left the arena with his lead having been wiped out inside half an hour.
On the other table, Graeme Dott stretched his lead to 10-1 over Stephen Maguire in an all-Scottish battle, beginning the session with a break of 130.