Berdych beats home favourite Kyrgios - but will Kyrgios learn the lessons?

Berdych won 6-3 6-4 1-6 6-4 but the Australian gave away the match by serving a double fault on the final point after looking like he could come back into the contest after winning the third set.

Berdych regained his composure for the fourth set in a match that had some controversy after Kyrgios complained a number of times that he was being put off by music in the background.

For the home fans it was a disappointing end: Berdych is precisely the sort of player that Kyrgios must aspire to beat if he is to go from tennis wild child to a real force in the game.

And in his mesmerising display in the third set - which he led 5-0 at one point - Kyrgios looked every inch the potential top 10 player that he promises to be one day, with some huge serves and ground strokes hit with almost ridiculous amounts of power and topspin.

Yet Berdych, a former Wimbledon finalist who has made the last four in Melbourne for the past two years, showed great reserves of class and composure as he re-established his grasp on the match in the fourth set, eradicating the errors and forcing Kyrgios into over-reaching himself.

It was that approach which saw him over the finish line: match point down on his own serve, Kyrgios missed with his first serve but decided he had to go for a second serve ace to get back on terms. He missed the mark by several feet, making his risky strategy look hopelessly naive as he went out of the tournament.

Nobody felt the pain of the exit more than Kyrgios himself: the BBC's David Law described him as looking like "a tortured soul" in his press conference after the match.

Eurosport expert analyst Greg Rusedski praised Kyrgios after the match for the spark that he has brought to the often too-cosy world of professional tennis, and called him a future world top 10 player.

But Rusedski added words of caution and advice: "He needs a full-time coach," he said. "Lleyton Hewitt's just retired. Could he get Rusty to coach him - and would he listen to him? That's the key...

"If works hard, and gets physically stronger, and can keep that sort of craziness, but with a bit more balance, he'll be a top 10 player."

"And that is the big question for him: Will he take the right steps over the next two or three years to make himself a champion in this sport?"