Andy Murray's Wimbledon semi-final against Poland's Jerzy Janowicz was halted with the Briton leading by two sets to one on Friday as fading light caused tournament officials to close the Centre Court roof.
Murray was leading 6-7(2) 6-4 6-4 after storming back from 4-1 down in the third but was left angry as the match was interrupted while the roof was closed and the lights switched on.
The light still seemed playable and home favourite Murray argued with umpire Jake Garner that another set should have been played before closing the roof.
Janowicz, the 24th seed, had blazed away with his ferocious serve to win the opener.
Play was set to resume after about 20 minutes.