Maria Sakkari pulled off the biggest surprise of the Qatar Open so far, knocking out world No. 1 Iga Swiatek in a dramatic quarterfinal. Sakkari fought back from a set down to win 2-6, 6-4, 7-5, handing Swiatek her fourth defeat of the season and becoming the first player to beat her in a WTA 1000 match after dropping the opening set.