Rybakina retires Cincinnati quarterfinal, could become No.1

Elena Rybakina retired from her Cincinnati Open quarterfinal against Iga Swiatek while trailing 4-1 in the first set due to a left ankle/heel issue after a medical timeout. The withdrawal jeopardizes her bid to overtake Aryna Sabalenka for world No. 1, with Swiatek advancing to the semifinals to face Jessica Pegula after Pegula defeated Amanda Anisimova in a tight match. Sabalenka had earlier been upset by Sara Bejlek, further shaping the race for the top ranking. Some reports noted strapping around the Achilles and described the retirement as potentially precautionary, as health takes precedence ahead of the US Open, where Rybakina had planned to compete in doubles as well. The overarching narrative across coverage is the potential disruption to the No. 1 chase and the attention on Rybakina’s fitness heading into the US Open.