Federer holds his service game and it goes to another tie break.

But then Nedovyesov fights it back to our third tie break.

But Zverev held his nerve to force a tie break, which he won comfortably.

Meanwhile, Federer and Super Hans are fighting out the second set in a tie break.

Giorgi eventually forced a forehand error to grab the set before it reached a tie break.

He lost the first two sets and faced two match points in the third set tie break.

It went to a tie break and Venus and Klaasen levelled the match with some strong serving.

She lost the tie break although she had another set point at 6-5.

This is a great tie break.

He duly wraps up the set, 7-3 in the tie break.

And we're in a tie break.

They saved a match point in the second set tie break before coming through in a match tie break.

Andreev aces him to get a set point of his own against the flow of things in this tie break.

Flicker of hope duly extinguished, a tie break beckons, in which Philippoussis will have the advantage with his sheer strength.

The world number one fought his first tie break of the week in his fourth round against Hicham Arazi of Morocco.

The momentum has definitely shifted his way since the tie break, but he needs to capitalise on it with a break.