Britain's former world number one Andy Murray broke down in tears after coming from a set down to beat Romanian Marius Copil and reach the last eight of the Washington Open.
The 31-year-old Briton won 6-7 (5-7) 6-3 7-6 (7-4) in a match that finished at 03:02 local time.
Murray will play Alex de Minaur of Australia in the quarter-finals - his first since Wimbledon in 2017.
He is playing only his third tournament since hip surgery in January.
More to follow.