Kyrgios Kos Federer

Australia young gun Nick Kyrgios knocked top seed Roger Federer out of the Madrid Open on Wednesday with a stunning 6-7 (2/7), 7-6 (7/5), 7-6 (14/12) victory.

The fast-paced contest took more than two and a half hours and denied top seed Federer any chance at a fifth title at the claycourt Masters event.

Kyrgios, who knocked Rafael Nadal out of Wimbledon last year, sent down 22 aces to Federer's 15 and next faces John Isner of the United States.

The Swiss saved five match points in the deciding tiebreaker while having two of his own annulled by the big-hitting Australian youngster, ranked 35th.