For the third year in a row, USP is collaborating with CityPickle to bring free pickleball–the fastest growing sport in America–back to Union Square. This one-day-only event will feature two first-class professional courts with nine hours of pickleball programming from 9 AM to 6 PM on Thursday, August 21. Facilitated by legendary pickleball pros, the day-long event gives the surrounding community an opportunity to witness the country’s top pickleball professionals play, to participate in free clinics, to stroll through tents featuring leading racquet, health, and wellness brands, and more.