Montreal's Felix Auger-Aliassime is out of the U.S. Open after dropping a 6-2, 6-4, 6-2 decision to 18-year-old Jakub Menšík of the Czech Republic in first-round action Tuesday in New York.
Menšík scored his sixth break in the final game of the match, with Auger-Aliassime committing his 36th unforced error on match point.
Auger-Aliassime, seeded 19th in New York, has had a string of tough results since finishing fourth in men's singles and teaming with Gabriela Dabrowski to win mixed-doubles bronze at the Paris Olympics.
He was drummed out in the first round of his hometown tournament at the men's National Bank Open, then fell in the third round of the Cincinnati Open when his British opponent, Jack Draper, was given the call on match point despite the ball seeming to hit the ground on his side of the court before going over the net.