Britain's Dan Evans produced an astonishing comeback to win the longest match in US Open history as he beat Russia's Karen Khachanov in five hours and 35 minutes.
Evans, 34, was 4-0 down in the decider but somehow found the mental and physical strength to win 6-7 (6-8) 7-6 (7-2) 7-6 (7-4) 4-6 6-4.
In a tense finale, Russian 23rd seed Khachanov saved two match points before hitting the third into the net.
Evans, who had only won four ATP matches this season, broke into a beaming smile before slumping exhausted into his chair.