Tennis coach Marián Vajda talks with Tennis player Novak Djokovic during practice before competing at the 2021 US Open inside Arthur Ashe Stadium in the Bill Jean King Tennis Center in Flushing Meadows Corona Park in Flushing NY on August 28, 2021. (Photo by Andrew Schwartz) //SCHWARTZAS_13379/2108291718/Credit:Andrew Schwartz/SIPA/2108291719,Image: 629348827, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Profimedia