Aryna Sabalenka vs. Cristina Bucsa, 2025 US Open Round 4

Sunday, 31 August 2025 09:39 PM EDT

Defending champion Aryna Sabalenka left no doubt that she is looking to repeat as champion here at the 2025 US Open. Sabalenka wrapped up play in Louis Armstrong Stadium on Sunday with a 6-1, 6-4 win over Cristina Bucsa. Sabalenka will face 2023 Wimbledon champion Marketa Vondrousova in the quarterfinals.

Check out some of USOpen.org's favorite photos from the Round of 16 match.

Aryna Sabalenka walks onto the court before the match during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

Aryna Sabalenka serves during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

Aryna Sabalenka in action during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

Cristina Bucsa in action during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

A detail photo of the sneakers worn by Aryna Sabalenka during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

Aryna Sabalenka in action during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

Cristina Bucsa in action during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

Aryna Sabalenka reacts during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

Aryna Sabalenka and Cristina Bucsa shake hands at the net after the match during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)

Aryna Sabalenka is interviewed after the match during a women's singles match at the 2025 US Open on Sunday, Aug. 31, 2025 in Flushing, NY. (Dustin Satloff/USTA)