The World Championship last-16 tie between Ronnie O'Sullivan and John Higgins is set for a thrilling finish on Monday after the Scot won the last three frames of the second session to close the deficit to only two.
Seven-time Crucible winner O'Sullivan led 6-2 following Saturday's first session and the match looked over when he stretched that advantage to 9-4 in the first-to-13 match.
But fellow 'Class of 92' member Higgins, with four world titles himself, fought back on a night of high drama to leave O'Sullivan 9-7 ahead, needing four more to claim victory.
The 50-year-olds play the final session of an enthralling match from 13:00 BST on Monday, with the match live on BBC Two.
"John has been incredible and it is incredible he is in this match," said seven-time world champion and BBC pundit Stephen Hendry. "Last night [in Saturday's first session] he really struggled for whatever reason.
"Ronnie's play was outstanding but John seemed really un-Higgins like. Maybe it was a little bit of nerves, a bit of intimidation, but he has just battled to stay in this match. Ronnie did not look the same player."