Good evening everyone, and welcome to LIVE coverage of the Australian Open fourth round. First up is Flavia Pennetta against Petra Kvitova on Hisense Arena.

Updated 24/01/2011 at 13:15 GMT

I. Melzer

V. Zvonareva

ZVONAREVA 6-4 3-1 - BREAK! Delightful returning from Zvonareva, and her shots are beginning to catch the lines with regularity. 0-30 looks dangerous for Benesova, and it gets little better but a good serve out wide, followed by a backhand cross-court, levels it up. Zvonareva responds to force break point, but Benesova saves it - and then a second. She can't deny her a third time, though, as the Russian whips a backhand from behind the baseline past Benesova at the net.

S. Peng

A. Radwanska

HEAD-TO-HEAD: Shuai and Radwanska have met three times, and Radwanska has a 2-1 advantage. Every clash has gone to three sets, however - and Shuai won the last one. Should be a tight encounter.

S. Peng

A. Radwanska

Next up on Margaret Court Arena - 12th seed Agnieszka Radwanska is in action against Shuai Peng of China.

I. Melzer

V. Zvonareva

ZVONAREVA 6-4 2-1- Clenched fist from Zvonareva as she recovers to 30-30 - Benesova is refusing to wilt under the pressure. The Russian edges ahead, and gets the job done to hold her serve.

I. Melzer

V. Zvonareva

ZVONAREVA 6-4 1-1- It's a long way back into this match for Benesova and if she's to have any chance she'll need a bright start to the second set. She claims the first two points but Zvonareva is making her graft for everything she gets, and with a thumping forehand down the line levels at 30-30. Magnificent drop shot from Benesova brings up game point, and she is on the board.

I. Melzer

V. Zvonareva

ZVONAREVA 6-4 1-0 - Benesova makes a committed start to the second set - her groundstrokes are keeping Zvonareva working very hard, and the Czech forces deuce. Game point to the Russian, but she nets once more. It takes a second deuce but after eight tense minutes the number two seed has the first game on the board.

I. Melzer

V. Zvonareva

Set stats: (Benesova/Zvonareva) Aces: 0/0 - First serve %: 33/68 - Double faults: 4/1 - Winners: 9/7 - Unforced errors: 16/12 - Total points won: 25/31

I. Melzer

V. Zvonareva

ZVONAREVA 6-4 - SET! More errors from the racquet of Benesova and she's staring down the barrel of three set points. Zvonareva has reassumed her air of authority, and she takes the first of her chances with a cross-court shot which beats the Benesova forehand.

I. Melzer

V. Zvonareva

ZVONAREVA 5-4 - This match has been topsy-turvy so far, and now the Russian looks to be on top again. Commanding winners to take the first two points - but countered by a lovely Benesova cross-court effort. The Czech cannot keep the next serve in, however, and another service winner nudges Vera back ahead in the set.

I. Melzer

V. Zvonareva

ZVONAREVA 4-4 - BREAK! Zvonareva snatches the first two points, but Benesova responds to the pressure with an authoritative forehand into the corner, followed by a service winner to level. Zvonareva looks more focused after the last change of ends, and controls the next point to bring up a break-back chance. It's a terrible time for a double fault. Level again.

I. Melzer

V. Zvonareva

ZVONAREVA 3-4 - Magical backhand from Benesova - she's been defending all game long but conjures a rasping passing shot from thin air to leave Zvonareva bemused. 30-30, but the Russian stops the rot to win her first game in five attempts.

I. Melzer

V. Zvonareva

ZVONAREVA 2-4 - You wouldn't know that Benesova is the unseeded player on this performance - the Russian has been second-best so far despite racing to the first two games. A string appears to go as Vera slips a forehand long, and Benesova closes out to 15 when her opponent puts a return into the net.

I. Melzer

V. Zvonareva

ZVONAREVA 2-3 - BREAK! Some fabulous lefty forehands from Benesova, who's catching the Russian out here with her placement. A crisp winner opens up break point, and Zvonareva cannot defend it! Three games in a row for the Czech, and she now has the break of serve in the opening set.

Remember, next up on Rod Laver is Andy Murray against Jurgen Melzer. Watch it LIVE on British Eurosport, or catch it on the Eurosport Player!

We have an upset on Rod Laver Arena - Robin Soderling is out! Who did it? How? The answers

I. Melzer

V. Zvonareva

ZVONAREVA 2-2 - Benesova has picked up her game and is into the contest, but Zvonareva reminds her of her threat with an unanswerable forehand to peg the Czech back to 30-15. A double fault follows to give the number two seed hope, but Benesova digs deep and holds.

I. Melzer

V. Zvonareva

ZVONAREVA 2-1 - BREAK! Benesova responds well to the disappointment of dropping serve. Her groundstrokes are not overly powerful, but they find the back of the court and before Zvonareva knows it she is 0-40 down. She saves the first well, the second even better, but doesn't deal well with Benesova's drop shot and cannot save the third. Back on serve.

I. Melzer

V. Zvonareva

ZVONAREVA 2-0 - BREAK! Early challenge from Zvonareva but it was a poor use of one of her three reviews - Benesova's serve was right on the line. 30-0 for the Czech, but a couple of sloppy errors allow the Russian back in. Another follows, and from a comfortable position Benesova finds herself having to defend a first break point. And she can't - missing a backhand cross-court narrowly wide.

I. Melzer

V. Zvonareva

ZVONAREVA 1-0 - The Russian number two seed settles well, reaching a short Benesova shot and guiding it superbly into the corner. The Czech replies with a good backhand, but it's her only joy in the first game of the match. Comfortable hold.

I. Melzer

V. Zvonareva

We're ready to go in this second match of the day on Hisense Arena - Zvonareva to serve first.