Sep 6, 2020; Flushing Meadows, New York, USA; Novak Djokovic of Serbia discusses with a tournament official after being defaulted for striking a lines person with a ball against Pablo Carreno Busta of Spain (not pictured) on day seven of the 2020 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center.,Image: 556553570, License: Rights-managed, Restrictions: *** World Rights ***, Model Release: no, Credit line: Profimedia