FORMER champion Milos Raonic lost in straight sets to 18-year-old Alex De Minaur in a second-round upset yesterday at the Brisbane International.

Raonic, who won the Brisbane title in 2016 and reached the Wimbledon final that year, struggled to find rhythm with his usually booming serve in a 6-4 6-4 loss to the Australian wild-card entry.

De Minaur pressured Raonic with his relentless service returns, made just one unforced error and only dropped serve once — when serving for the match at 5-2 in the second — en route to the biggest win of his career.