(Mason) Félix Auger-Aliassime was beaten in his second game at the Western Open
Thirty-second in the world, the Frenchman won in one hour and 49 minutes against Auger-Aliassime, ranked 14th in the ATP.
The Quebecer committed 21 unforced errors and eight double faults, while collecting a single ace.
Auger-Aliassime earned a break to make it 4-4 in the second set, but it was broken in the next game. His rival then ended the debate.
Earlier Tuesday, in his first game on American soil since 2021, Novak Djokovic lost in doubles with Nikola Cacic, 6-4 and 6-2 to Jamie Murray and Michael Venus.
Djokovic is back in the United States after missing tournaments under the rules in place during the pandemic.
It was his first competitive match since a loss in the Wimbledon final against world number 1 Carlos Alcaraz.
Record holder with 23 Grand Slam singles titles, Djokovic will play Wednesday night in singles against Alejandro Davidovich Fokina, 23rd racket at the ATP.
Alcaraz takes on Australian qualifier Jordan Thompson late on Tuesday.
Defending Flushing Meadows champion, he can go for a 50th win in 2023.
On the women’s side, former New York queen Sloane Stephens won 4-6, 6-4, 6-4 over defending Ohio champion Caroline Garcia.
Fifth seed Ons Jabeur erased a 5-1 deficit in the third set and defeated Anhelina Kalinina 6-3, 6-7(2), 7-6(2).