British number three Kyle Edmund made an impressive start at the Delray Beach Open with a dominant win over France's Adrian Mannarino.
The 22-year-old from Yorkshire, ranked 49th, won 6-3 6-0 in the Florida hard-court tournament.
Mannarino, the world number 60, beat Edmund in their only previous meeting at Wimbledon last year.
Edmund will play American Bjorn Fratangelo or Yen-Hsun Lu of Taiwan in the second round.
Canada's Milos Raonic, the world number four, is the top seed at Delray Beach and a potential quarter-final opponent for Edmund.
Argentina's Juan Martin del Potro is making his first appearance of 2017 after extending his off-season following victory in the Davis Cup in November.