British number three Jack Draper raced into the second round of the Mexican Open with a straight-set win over American seventh seed Tommy Paul.
Draper held serve throughout and converted four of his five break-point opportunities to win 6-0 6-4 in one hour and 26 minutes in Acapulco.
He will next face Japanese lucky loser Yoshihito Nishioka.
Draper’s compatriot Dan Evans went out after losing 2-6 7-5 7-6 (7-5) to American Ben Shelton.
Evans served for the match in the third set after surviving three match points but Shelton, the world number 17, came back at him.
“Definitely a really tricky match-up for me,” Shelton said. “Dan is a guy that I know well, we have a lot of banter in the locker room and [he is a] guy whose game presents a lot of challenges.
“So to be able to come out of this first match here with a win after losing the first set is a big accomplishment for me.”