Alexei Popyrin, of Australia, reacts after beating Novak Djokovic, of Serbia, during a third round match of the U.S. Open tennis championships in New York.
Novak Djokovic, of Serbia, shakes hands with Alexei Popyrin, of Australia, during a third round match of the U.S. Open tennis championships in New York.
Alexei Popyrin, of Australia, reacts after match against Novak Djokovic, of Serbia, during a third round match of the U.S. Open tennis championships in New York.
Novak Djokovic, of Serbia, reacts against Alexei Popyrin, of Australia, during a third round match of the U.S. Open tennis championships in New York.
Alexei Popyrin, of Australia, returns a shot to Novak Djokovic, of Serbia, during a third round match of the U.S. Open tennis championships in New York.
Argentina's Tomas Martin Etcheverry, right, embraces Germany's Alexander Zverev after their third round match of the U.S. Open tennis championships in New York.
Germany's Alexander Zverev gestures during a third round match against Argentina's Tomas Martin Etcheverry during the U.S. Open tennis championships in New York.
Argentina's Tomas Martin Etcheverry reacts during a third round match against Germany's Alexander Zverev in the U.S. Open tennis championships in New York.
Germany's Alexander Zverev returns a shot to Argentina's Tomas Martin Etcheverry during a third round match of the U.S. Open tennis championships in New York.
Argentina's Tomas Martin Etcheverry returns a shot to Germany's Alexander Zverev during a third round match of the U.S. Open tennis championships in New York.
