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.
US Open, Day 5 Men's Singles Wrap: Djokovic Knocked Out; Zverev Advances - In Pics
World number two Novak Djokovic suffered a shock exit in the third round, losing to Australia's Alexei Popyrin 4-6, 4-6, 6-2, 4-6 on Day 5 of US Open. The defending champion committed 14 double faults en route the defeat, and will end a calendar year without claiming any Grand Slam for the first time since 2017. Later, fourth seed Alexander Zverev battled past Argentina's Tomas Martin Etcheverry in four sets to advance to the fourth round at Flushing Meadows.
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.