WASHINGTON, DC - AUGUST 01: Naomi Osaka of Japan warms up before a women's singles match against Alexandra Eala of the Philippines on day six of the Mubadala DC Open 2026 at William H.G. FitzGerald Tennis Center on August 01, 2026 in Washington, DC. (Photo by Emilee Chinn/Getty Images)

WASHINGTON, DC - AUGUST 01: Naomi Osaka of Japan celebrates during a women's singles match against Alexandra Eala of the Philippines on day six of the Mubadala DC Open 2026 at William H.G. FitzGerald Tennis Center on August 01, 2026 in Washington, DC. (Photo by Emilee Chinn/Getty Images)

WASHINGTON, DC - AUGUST 01: Naomi Osaka of Japan prepares to serve during a women's singles match against Alexandra Eala of the Philippines on day six of the Mubadala DC Open 2026 at William H.G. FitzGerald Tennis Center on August 01, 2026 in Washington, DC. (Photo by Emilee Chinn/Getty Images)

WASHINGTON, DC - AUGUST 01: Naomi Osaka of Japan celebrates during a women's singles match against Alexandra Eala of the Philippines on day six of the Mubadala DC Open 2026 at William H.G. FitzGerald Tennis Center on August 01, 2026 in Washington, DC. (Photo by Emilee Chinn/Getty Images)

WASHINGTON, DC - AUGUST 01: Alexandra Eala of the Philippines reacts during a women's singles match against Naomi Osaka of Japan on day six of the Mubadala DC Open 2026 at William H.G. FitzGerald Tennis Center on August 01, 2026 in Washington, DC. (Photo by Emilee Chinn/Getty Images)

WASHINGTON, DC - AUGUST 01: Alexandra Eala of the Philippines returns a shot during a women's singles match against Naomi Osaka of Japan on day six of the Mubadala DC Open 2026 at William H.G. FitzGerald Tennis Center on August 01, 2026 in Washington, DC. (Photo by Emilee Chinn/Getty Images)

WASHINGTON, DC - AUGUST 01: Jessica Pegula of the United States returns a shot during a women's singles match against Diana Shnaider of the United States on day six of the Mubadala DC Open 2026 at William H.G. FitzGerald Tennis Center on August 01, 2026 in Washington, DC. (Photo by Emilee Chinn/Getty Images)

WASHINGTON, DC - AUGUST 01: Jessica Pegula of the United States celebrates during a women's singles match against Diana Shnaider of the United States on day six of the Mubadala DC Open 2026 at William H.G. FitzGerald Tennis Center on August 01, 2026 in Washington, DC. (Photo by Emilee Chinn/Getty Images)