Welcome to our LIVE coverage of fourth seed Agnieszka Radwanska's match against Anna-Lena Friedsam of Germany.

BREAK! - FRIEDSAM 7-6(6) 1-5 RADWANSKA. A real collapse from the German and we'll almost certainly be looking at a decider now. Radwanska piles on the pressure with triple break point and doesn't have to do anything more as her opponent buckles with a double fault to hand the Pole the double break. Agie to serve for the set.

FRIEDSAM 7-6(6) 1-3 RADWANSKA. A great response from the seed who has broken early in the second to wrestle the momentum away from the German... for now.

SET! - FRIEDSAM 7-6(6) RADWANSKA. Trouble for Agie! The Pole worked her way back into the set but couldn't complete the recovery prior to the TB. Once more she saved herself by breaking back at set point at 6-5 down in the TB, but Anna-Lena regained her composure and eventually grabbed the opener 8-6. Shock on?

FRIEDSAM DOES IT! She takes the tiebreak 8-6: A fantastic tie-break from both players, closed out with more power hitting by Friedsam, who is definitely good value for the set. The German did brilliantly to regroup and claim that set after losing a 4-1 lead earlier - but can she keep it up?

Radwanksa saves a set point as she trails 6-5, and it's now 6-6 in the tie-break. The players have a change of ends, Friedsam with the serve...

Friedsame gets her nose in front at 5-3! A brilliant point by both players, decided as Radwanska charges the net, hits a drop shot... and Friedsam powers it clean through her opponent for the winner.

These two continue to match each other blow for blow in the tiebreak - and Radwanksa has just made it 3-3 with a marvellous backhand lob just as Friedsam looked certain to go 4-2 ahead. Still anyone's set...

TIE-BREAK! - FRIEDSAM 6-6 RADWANSKA. The fourth seed had set point at 5-4 but couldn't get over the line. It's been a great effort by Friedsam and she could yet get her reward in the TB.

6-6! Into a tie-break, Radwanska holding serve with ease in that game.

Friedsam 6-5 Radwanska: An absolutely epic hold from Friedsam, pushed to deuce - and both players are playing some great stuff now, mixing it up. Radwanska serving to push this to a tiebreak now...

Friedsam 5-5 Radwanska: BREAK! Radwanska fails to claim the opening set! In trouble at 4-1 down, Radwanska rattled off four games in a row to take charge of this fourth round match. But Friedsam found her range again in this 10th game of the match, saving a couple of set points and pushing the Pole to deuce before a thundering forehand at advantage was too much for Radwanksa to handle.

Friedsam 4-5 Radwanska: ANOTHER BREAK! Friedsam looked superb four games ago, but has collapsed completely and has not lost eight staight points to give Radwanska a chance to serve for the match.

Friedsam 4-4 Radwanska: A hold to love for Radwanksa as she rattles through that game with ease.

Friedsam 4-3 Radwanska: BREAK! Radwanska finds her form, and Friedsam starts making a series of errors, perhaps nerves kicking in...

Friedsam 4-2 Radwanska: Radwanska holds serve to get back on course, but she needs to start getting into this match. Right now she's struggling with Friedsam's power.

Friedsam 4-1 Radwanska: Friedsam holds this time, winning the game for the loss of just one point, and wrapping it up with a great backhand down the line. Radwanska definitely looked a little slow reacting to that one, barely even moving towards the ball.

Friedsam 3-1 Radwanska: A second break for the German, who pushed Radwanska hard once again in a lengthy deuce game - but made the difference by thumping a huge forehand on advantage, then charged the net to close out the point. The fourth seed, so impressive so far in the tournament despite injury niggles, looks rocked.

Friedsam 2-1 Radwanska: Radwanska breaks back immediately, attacking with some powerful returns as she gets back on track. A long rally at 30-40 could go either way, but Friedsam goes for a big forehand winner - and ends up dragging the ball into the tramlines.