Britain's Jack Draper impressed on his return from a hamstring injury with a comfortable victory over American Jenson Brooksby at the European Open in Antwerp.
The world number 48 will face top seed Hubert Hurkacz of Poland next.
Fellow Briton Dan Evans, 32, is also through to round two after beating Dutchman Tallon Griekspoor 6-3 6-4.
The British number two, ranked 26th in the world, will take on either France's Constant Lestienne or qualifier Jesper de Jong of the Netherlands.
Draper was happy with his performance in Belgium after his run in the Grand Slam event in New York was cut short.