Andy Murray dropped seven consecutive games after a let call caused by a loud noise in the arena's speaker system during a fourth-set point and lost to Kei Nishikori 1-6, 6-4, 4-6, 6-1, 7-5 in the US Open quarterfinals.
Murray, the No. 2 seed and 2012 champion at Flushing Meadows, disagreed with chair umpire Marija Cicak's decision to immediately halt things when play was interrupted by a sound similar to that of a gong being struck.
It happened with Murray already up two sets to one and holding a second break point at 1-all in the fourth.
Murray complained about the ruling right away, gave away the next three points to lose the game, then brought it up again with Cicak at the ensuing changeover, saying something similar had happened earlier without a re-do of the point.
Nishikori was the 2014 runner-up at Flushing Meadows.