Hewitt axes Kokkinakis for Davis Cup semi

John Peers right is looming as the key man for Australia in this weekend's Davis Cup semi-final

Kyrgios, who has been carrying a hip injury, goes into the match claiming: "I am not the professional tennis needs me to be". Besides former number one Djokovic, Serbia will travel without Viktor Troicki and Janko Tipsarevic.

John Millman practising ahead of his Davis Cup debut.

Serbia began the day level at 1-1 following Friday's singles rubbers, with world number 80 Dusan Lajovic having secured a shock victory over 22nd-ranked Lucas Pouille. The Frenchman never found the right tempo, made wrong tactical choices, and hit a total of 70 unforced errors.

A win over Belgium would see Australia host the Davis Cup final at home in late November against the victor of France and Serbia.

John Millman will take some juice out of the underprepared David Goffin's legs on day one, and Nick Kyrgios will reap the rewards on Day 3 when he plays Goffin sealing the tie for Australia, three rubbers to one.

The world No. 18 wasted little time in dispatching Laslo Djere 7-6, 6-3, 6-3 to leave the tie level heading to the doubles match.

However, Millman's run to the third round at the US Open and the final at a challenger tournament in Kentucky last month were enough to convince Hewitt he was ready to open the match against Belgium No.1 David Goffin on Friday. David Goffin, like Kyrgios, performs well in Davis Cup so if the two meet in the 4th rubber on Sunday, it would definitely be worth watching. And one of the things that impacts that is the media and how I feel I'm being portrayed in it. Wimbledon this year was a case in point. The tie will be played on an indoor clay court.

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The Serbian took all the risks and reduced Pouille to a spectator's role with deep groundstrokes and kicked serves that caught his opponent out.

"The fifth set could have gone either way, but Nick hang tough on the big points and came up clutch and we were able to sneak away with the win".

The question now is whether Kyrgios can become the next great player in an era when several all-time legends are at the very back end of their careers.

Kyrgios stormed imperiously through the opening set, sending down eight aces without losing a point in five service games.

But the relief did not last.

Saturday's doubles action sees Belgium's Ruben Bemelmans and Arthur de Greef take on Australia's John Peers and Jordan Thompson while in the other tie, the French duo of Pierre-Hugues Herbert and Nicolas Mahut face Filip Krajinovic and Nenad Zimonjic.

In the play-offs, where the winners will compete in the World Group next season, 2016 champions Argentina are 1-1 against Kazakhstan after US Open quarter-finalist Diego Schwartzman eased past Dimtri Popko 6-4, 6-2, 6-2.