Top seed Fritz stumbles as Rybakina and Fernandez win at DC Open

US top seed Taylor Fritz dropped an early on Saturday morning marathon to Spain's Alejandro Davidovich-Fokina while Britain's Emma Raducanu and Canada's Leylah Fernandez reached the semi-finals of the ATP and WTA DC Open.

- 

World number four Fritz, two points from victory in the ninth game, dropped the last five games in defeat to the 26th-ranked Spaniard 7-6 (7/3), 3-6, 7-5 after three hours and five minutes in a match ending just before 2:00 am.

Davidovich-Fokina advanced to the semifinal against US fourth seed Ben Shelton, who beat sixth-seeded hometown hero Frances Tiafoe 7-6 (7/2), 6-4.

Fritz, who had 20 aces and six double faults, served for the match in the ninth and was up 30-0 but lost, then failed to take advantage of three double faults by Davidovich-Fokina in the 1Oth game.

The other men's semifinal will send French lucky loser Corentin Moutet against Australian seventh seed Alex De Minaur, who eliminated American Brandon Nakashima 6-4, 6-4.

Moutet withstood leg cramps to eliminate eighth seed Daniil Medvedev 1-6, 6-4, 6-4.

"I tried to survive every point because it was hard physically," Moutet said after fighting off leg cramps. "I'm just proud of myself."