Still-perfect Novak Djokovic advances at US Open

Struff managed only four break points and couldn't convert Djokovic has won his last 29 matches and is 26-0 this season, making him a prohibitive favorite to get his fourth U.S. Open title — he won it in 2011, 2015 and 2018. AP SSCSSC

Top-seeded Novak Djokovic stayed perfect for 2020 and advanced to the fourth round of the US Open with a straight-sets win

He beat Germany's Jan-Lennard Struff 6-3 6-3 6-1 in an hour and 43 minutes, holding serve throughout. Struff managed only four break points and couldn't convert

Djokovic has won his last 29 matches and is 26-0 this season, making him a prohibitive favorite to get his fourth U.S. Open title — he won it in 2011, 2015 and 2018. He'll play 20th-seeded Pablo Carreno Busta. AP SSCSSC