Britain's Emma Raducana is through to the quarter-finals of the Washington Open after beating four-time Grand Slam winner Naomi Osaka in straight sets.
After previously upsetting Ukranian seventh seed Marta Kostyuk in round one, England's Raducanu produced a dominant performance to beat former world number one Osaka 6-4 6-2.
The 2021 US Open women's singles champion will face wildcard Maria Sakkari in the last eight after the Greek player knocked out American second seed Emma Navarro.
However, in the men's singles, Britons Cameron Norrie and Dan Evans were eliminated in the last 16.