Maria Sharapova's long-unbeaten record in night session matches at US Open was ended in the fourth round by Carla Suarez Navarro. Sharapova, the champion in 2006, had won 23 straight matches under the lights, including her previous three contests this year, but Suarez Navarro, on her 30th birthday, clinched a 6-4, 6-3 victory to reach her second quarter-final in New York.

Birthday special
It was well deserved for the Spanish 30th seed, who next plays Madison Keys, as she drew the errors from the Sharapova racket — 38 unforced, including eight double faults — and used her flowing single-handed backhand to great effect. Sharapova matched her performance from last year but then, in her first slam since the end of her doping ban, the fourth round seemed a sign she could return to her best. Twelve months on, that seems significantly less likely.