Andy Murray must come back on Sunday to try to finish off Philipp Kohlschreiber after play was suspended for darkness at 7-7 in the fifth set of their third-round match at Roland Garros.
The pair followed a crazy five-set match between Gael Monfils and Fabio Fognini onto Court Suzanne Lenglen and produced just as many twists and turns.
After three hours and 27 minutes they were tied at 3-6 6-3 6-3 4-6 7-7, with Murray having fought back from a set down to lead only to make a mess of the fourth when the match seemed in his grasp.
Murray put the disappointment behind him by ending the run of breaks at the start of the fifth set and then took advantage of two Kohlschreiber double faults to break for 2-0.
Back came the German once more, though, and there was a worrying moment at the end of the game as Murray pulled up and grabbed at his left hamstring trying to chase down a drop shot.
He appeared in serious trouble when Kohlschreiber broke for 3-2 and led for the first time since the opening set but, not surprisingly in a match of so many breaks, Murray hit straight back.
The Scot called the trainer to massage his right thigh after holding for 4-3, and then his left thigh when he made it 5-4.
The pressure was on Kohlschreiber as the man serving second, and at 5-6 and 15-30, Murray was two points away, but he could not take advantage.
In the next game Murray was staring down the barrel at break point but played three good points to hold, yelling and pumping his fist to urge himself on.
Kohlschreiber withstood more pressure to hold for 7-7 and, at 9.39pm with the sun setting, play was called off for the night.