Roger Federer overcame a slow start, then a late lapse, and needed five sets to win a topsy-turvy first-round match at the U.S. Open against 19-year-old American Frances Tiafoe.
The number-3 seeded Federer got broken in the first game and dropped the opening set, and then appeared to take control before letting a lead slip away. Eventually, he edged the 70th-ranked Tiafoe 4-6, 6-2, 6-1, 1-6, 6-4 by breaking serve in the last game.
It was Federer's 79th career victory at the U.S. Open, equaling Andre Agassi for second-most. Only Jimmy Connors has more, with 98.