Raducanu has already secured British No 1 status with her progress in Washington DC and now faces a final four test against Kalinskaya with Leylah Fernandez facing Elena Rybakina in the other Citi Ope

If victorious, she would set up an emotional final against either Leylah Fernandez, her championship match opponent at Flushing Meadows, or doubles teammate and third seed Rybakina. The doubles withdrawal came as little shock given Raducanu's remarks following her victory over Sakkari.

WASHINGTON -- WASHINGTON (AP) — Emma Raducanu dominated her first career matchup against Naomi Osaka, winning the showdown at the D.C. Open on Thursday between past U.S. Open champions 6-4, 6-2.

July 25 (Reuters) - Emma Raducanu beat four-times Grand Slam champion Naomi Osaka 6-4 6-2 in their first career meeting to reach the quarter-finals of the Washington Open on Thursday. Raducanu, U.S. Open champion in 2021, next faces former world number three Maria Sakkari after the Greek stunned American second seed Emma Navarro in straight sets.

WASHINGTON — Emma Raducanu handed No. 7 seed Marta Kostyuk a sixth consecutive loss Tuesday, defeating her 7-6 (4), 6-4 at the DC Open to prolong a slide that now has lasted more than two months.