Zverev said his gold medal is with him in New York.
Olympic champs Alexander Zverev, Belinda Bencic reach U.S. Open quarterfinals
“Because I’m not only playing for myself I’m not only playing for my parents, for my brother, for my family," he added. "But I’m also playing for everybody, all the (German) athletes here back at the base and everybody back at home watching."
Djokovic loses to Zverev at Olympics, ending Golden Slam bid