To further embrace the fastest-growing sport in the U.S., the YMCA of Greenwich is offering weekly pickleball beginner and intermediate training clinics. These opportunities allow the community to learn the rules of the sport, practice the basics and gain the confidence to jump into the Y’s weekly open games. Jodi FitzGerald, the senior director of member experience at the YMCA of Greenwich, said these offerings — like most of the Y’s — reflect …