Talk about mental toughness! Karolina Muchova, the Czech ace, had to dig deep in her US Open second-round win after spotting her ex-boyfriend in the stands—without an invite. She admitted it threw her off, but she powered through, showing why she’s a rising force. With crowd drama already a theme this year, Muchova’s composure is next-level. Next up: a clash with Kostyuk for a spot in the quarters. Can she keep her cool if she faces Coco Gauff with the crowd roaring? #Sports #Tennis #USOpen