(source: stuff.co.nz)

Australia young gun Nick Kyrgios secured the “greatest win” of his career after upsetting World No. 2 Roger Federer in a marathon second-round encounter of the ATP Mutua Madrid Open on Wednesday.

Kyrgios, who came into limelight after pulling off a stunner against Rafael Nadal at the Wimbledon Championships last year, looked confident to wrap up a 6-7 7-6 7-6 conquest of 17-time Grand Slam champ Federer.

This triumph not only guarantees Kyrgios a berth in the pre-quarterfinals of the Masters event, but also earns him a seeding at the forthcoming French Open 2015, which will make his job easier in the draw.

“This is definitely the greatest win over my career so far,” 3News quoted 35^th-ranked Kyrgios as saying. “It doesn’t really feel real at the moment. I didn’t really feel as if I was playing out there – it almost felt like I was watching.”

Interestingly, 20-year-old Kyrgios became the youngest player to beat both Federer and Nadal in the history of the sport.