On the hard courts of Cincinnati, four women arrive at the semifinal stage carrying different kinds of belief — some forged over years of rivalry, others born from a single unexpected run. Jessica Pegula and Iga Swiatek renew a well-worn contest for the 13th time, while Coco Gauff faces Sara Bejlek, an unseeded player who has quietly dismantled the draw's most formidable names. The tournament asks, as sport often does, whether form and history can be undone by confidence and timing.