Maria Sakkari Defeats Bianca Andreescu in 3.5-Hour 2021 US Open Match Greece's Maria Sakkari and Canada's Bianca Andreescu, the 2019 US Open champion, played a match on Sept. 6 that lasted three-and-a-half hours. Its 2:13 am ET finish was the latest of any US Open women's singles match. Later on in the tournament, she became the first Greek woman to advance to the singles semifinals at the US Open. Image Source: Getty / Matthew Stockman