Auger-Aliassime was unable to take advantage of the home support, with Lajovic winning 7-5, 6-4.
Lajovic capitalised on nerves and numerous Auger-Aliassime forehand unforced errors to defeat the 21-year-old for the second time.
Auger-Aliassime’s costly double fault gifted Lajovic a break at 6-5 in the opening set, and the Serb held routinely in the following game to take a one-set advantage. Lajovic broke serve again in the third game of the second set and did not look back, with the World No. 41 saving two break points on his way to victory.
Lajovic will look to claim his first win against Casper Ruud in the third round. Ruud has been in remarkable form in recent weeks, winning his past three tournaments (Bastad, Gstaad and Kitzbuhel) and holding a 35-9 record in 2021.