The Australian eased into round three despite windy conditions on Court Three before watching girlfriend Katie Boulter lose a three-hour marathon to fellow Brit Harriet Dart on No.1.
It is never easy playing in these conditions and closing the match out. I played some great tennis. I am very happy to be in the third round and very happy the sun is out here in London. Alex de Minaur
The 25-year-old defeated Spain’s Jaume Munar 6-2 6-2 7-5.
De Minaur endured a difficult ending by missing a hat-trick of match points before being broken.
Minaur said: ‘I had fun in my match. It would’ve been better if I didn’t get broken in the third set, I’m very happy to get the win.