Tough night for Madison Keys at the US Open—she racked up 14 double faults and 89 unforced errors, echoing the serving struggles we've seen from Coco Gauff and Emma Navarro lately. Keys, fresh off her Aussie Open triumph, became the first top-10 seed to crash out, losing a thriller to Renata Zarazua. With Keys out, Gauff’s section of the draw just got a lot more interesting. Is the pressure getting to the American stars, or is it just a serving slump? #Sports #USOpen #MadisonKeys