Andy Murray dazzled under the Wimbledon lights again as he led Greek fifth seed Stefanos Tsitsipas in a Centre Court thriller stopped by a 23:00 BST curfew.
Britain's Murray is ranked 40th but showed his pedigree on the SW19 grass to lead 6-7 (3-7) 7-6 (7-2) 6-4.
The second-round match was stopped at 22:39 BST because of the restrictions put in place by the local council.
Murray, who has regularly played late in recent years, and Tsitsipas will resume a captivating contest on Friday.
The pair will return to Centre Court after Spanish top seed Carlos Alcaraz plays France's Alexandre Muller in the first match starting at 13:30 BST.
Moments after 36-year-old Murray had wrapped up the third set, tournament referee Gerry Armstrong walked onto the court and discussed stopping play for the night with each player.
Murray, who screamed out as he fell just before serving out for the lead, seemed to ask why they were being forced off.
Tsitsipas, 24, quickly packed his bags and seemed happy to have the opportunity to reset.
Andy Murray is aiming for his 200th win at a Grand Slam which would make him only the eighth man to achieve the featEyes were instantly drawn to this potential blockbuster when the draw was made last Friday and, after both players negotiated their opening matches on different paths, it was billed as the box-office match of the tournament so far.
Further fuel was added by the memories from their feisty clash at the 2021 US Open, where Murray said he "lost respect" for Tsitsipas after a lengthy bathroom break before a final set which the Greek won.
This time, all the drama remained on the court.
Murray is a two-time champion at the All England Club and has been talking bullishly about his chances of going deep in the draw this fortnight.
Despite missing out on a seeding, which left him vulnerable to a tough early test, the former world number one insisted he had the ability and nous to cause anyone problems.
For many people, Tsitsipas felt ripe to be on the end of an upset.
More to follow.
