The World Championship semi-final between John Higgins and Shaun Murphy is delicately poised at 8-8 after a captivating second session at the Crucible Theatre in Sheffield.
In contrast to the opening to their match on Wednesday, Higgins appeared the stronger of the two players in their early exchanges.
The four-time world champion, who turns 51 on 18 May, ruthlessly punished a missed black from Murphy to take the opening frame with a break of 72.
Englishman Murphy, who is looking to end a 21-year wait for his second Crucible crown, delivered the perfect riposte with an 88 as he took two of the next three frames to draw level at 6-6.
When Murphy failed to convert a plant to the right middle, his error was again exploited, with Higgins enjoying a run of 57 to edge back in front.
The Scot then knocked in a wonderful break of 86 off the back of a brave long red to open up a two-frame advantage.
However, Murphy took a scrappy 15th frame and turned the tables on his opponent to restore parity when Higgins missed a tricky red with the rest down the left cushion.
Their best-of-33-frames encounter will resume on Friday at 19:00 BST, with another eight frames to be played in the third of four sessions.
China’s Wu Yize takes a 6-2 lead into the second session of his last-four meeting with Mark Allen, which gets under way at 14:30 BST.