British number three Cameron Norrie is through to the second round of his maiden French Open.

The 22-year-old, who only played his first professional match on clay in February, was leading 6-1 2-0 when opponent Peter Gojowczyk retired injured.

Norrie had looked assured on his Roland Garros debut, roaring through the first set in just 25 minutes and finishing the job with a booming ace.

During the changeover, world number 43 Gojowczyk requested lengthy treatment for what appeared to be a hip injury.

Norrie immediately broke again to love with his opponent clearly not moving freely and - once another forehand flew past him - the German called it quits.

Norrie, currently ranked 85 in the world, will face French 15th seed Lucas Pouille in round two.