KYRGIOS 1-0 KHACHANOV Kyrgios gets the crowd going early with a tasty drop shot to take the first game. Few cheers as Khachanov takes him toe 40-30 but the Aus goes 1-0 up.

KYRGIOS 6-2 7-6 6-7 6-7 7-6 (8) KHACHANOV

HE'S DONE IT! AND KYRGIOS FALLS TO THE FLOOR AND THE CROWD GOES WILD!

KYRGIOS 6-2 7-6 6-7 6-7 6-6 KHACHANOV

Massive backhand winner by Kyrgios draws him level at 8-8.

This. Is. Tense.

MATCH POINT KYRGIOS!

KYRGIOS 6-2 7-6 6-7 6-7 6-6 KHACHANOV

Khachanov roars as he goes 7-6 up.

Kyrgios roars as he draws level!

Massive serve by Kyrgios but the Russian somehow gets it back with interest and he's 8-7 down.

KYRGIOS 6-2 7-6 6-7 6-7 6-6 KHACHANOV

Sometimes it works, sometimes it doesn't. A Kyrgios dropshot fails and he's 5-4 down.

ACE for the Aussie! 5-5!

6-6!

KYRGIOS 6-2 7-6 6-7 6-7 6-6 KHACHANOV

Khachanov attacks the Kyrgios second serve and wins his fourth point in a row. 4-3 to the Russian.

Formidable, from both players!

Kyrgios wrongfoots his man for 4-4. Vital.

KYRGIOS 6-2 7-6 6-7 6-7 6-6 KHACHANOV

Khachanov gets on the scoreboard with a smash. 3-1.

Big serve. 3-2.

Kyrgios wide. 3-3. Advantage eliminated.

KYRGIOS 6-2 7-6 6-7 6-7 6-6 KHACHANOV

Kyrgios wins a point on the Khachanov serve for the first time in ages, and then wins a point on his own for good measure. And another!

MASSIVE CHEERS! 3-0 up.

KYRGIOS 6-2 7-6 6-7 6-7 6-6 KHACHANOV

Both players looking fully resigned to a tie-break, so forget the last four and a half hours, this one will be settled with an old fashioned first to ten, win it by two, super tie-break

KYRGIOS 6-2 7-6 6-7 6-7 5-6 KHACHANOV

Khachanov mixes it up with a hold to love and a bunch of huge serves with a couple aces.

KYRGIOS 6-2 7-6 6-7 6-7 5-5 KHACHANOV

Kyrgios. Dropshots. Hold. Repeat.

KYRGIOS 6-2 7-6 6-7 6-7 4-5 KHACHANOV

Khachanov. Big serves. Hold. Repeat.

KYRGIOS 6-2 7-6 6-7 6-7 4-4 KHACHANOV

Kyrgios goes 40-0 up, but moments later we're at deuce. This could be bad. Khachanov goes wide and that's advantage to the Aussie.

ACE. 4-4.

We've hit hour number four.

KYRGIOS 6-2 7-6 6-7 6-7 3-4 KHACHANOV

Kyrgios hits a forehand wide and punishes himself with a few hits to the head with his racket.

Khachanov smashes and aces his way to another hold to love.

KYRGIOS 6-2 7-6 6-7 6-7 3-3 KHACHANOV

Just when you think the math is lagging, Kyrgios produces another breathtaking dropshot. Master.

An ace and another ace and that's 3-3.

KYRGIOS 6-2 7-6 6-7 6-7 2-3 KHACHANOV

Very easy. Another hold by Khachanov. Little fight left.

KYRGIOS 6-2 7-6 6-7 6-7 2-2 KHACHANOV

Khachanov goes for it between the legs and it lands but Kygrios volleys a winner in response.

A comprehensive hold from the Aussie.

KYRGIOS 6-2 7-6 6-7 6-7 1-2 KHACHANOV

Kyrgios direct some sarcastic applause somewhere as he fails to take Khachanov to deuce after fighting to 40-30.

As the two get tired, this has turned into less a contest of great tennis and more a battle of wits. Who will throw it away on their serve? Or are we heading for a super tie-break?

KYRGIOS 6-2 7-6 6-7 6-7 1-1 KHACHANOV

Kyrgios responds with a comfortable hold of his own.

Shall we just have a tie-break now? Feels somewhat inevitable.