Nick Kyrgios has won his first ATP World Tour title after upsetting fourth seed Marin Cilic 6-2, 7-6 (7/3) in the final of the Marseille Open.

The 20-year-old Canberran reached the final by defeating two top 10 players including Tomas Berdych and Richard Gasquet and he proved too good for 2014 US Open champion Cilic.

Kyrgios did not lose a set all week and did not drop serve in any of his matches.

“I played my first final last year and was looking for my first title,” said Kyrgios, who lost his only other final appearance in Estoril last year.

“But I didn’t really expect to win this title this week after having a couple of weeks off. But from the first round I started playing really well and just gained confidence as I kept winning matches.”

Kyrgios is the first player under the age of 21 to beat top 10 opponents in consecutive matches since Juan Martin del Potro at the 2009 US Open.

The win will also boost his world ranking which was at number 41 at the start of the week.