6-1 - Ooh! Lisicki has absolutely nothing left and she forlornly hits wide to hand Safina a place in the semi-finals at the first attempt

5-1 - What should have been a comfortable game for Safina is made less so after consecutive double faults but she holds when Lisicki hits long and the German will have to serve to stay in this match

15:22 - Lisicki has called for the trainer at the change of ends although it is not totally apparent why. It appears to be something to do with her right calf

3-1 - Ouch! Lisicki really has gone very flat since getting that break back as Safina holds to 15, when the German hits a forehand return into the net, to cement the break

1-1 - LISICKI BREAKS RIGHT BACK! Safina manages three break points by forcing Lisicki to hit long in an epic game but the German gets lucky on her fourth with the ball literally rolling up and over the net after her forehand hits the tape

6-4 - BANG! This time Safina takes her chance and levels the match when Lisicki hits another forehand into the net. This match will go to a decider

Ad-40 - A lengthy rally of 20 strokes at 30-30 ends when Safina hits a backhand into the net and now it is Lisicki's turn to scream at herself, albeit in encouragement. Still Safina saves the break point when Lisicki hits wide quickly earns herself a set point with a forehand winner

5-3 - Safina holds to 15 to consolidate the break and the backhand is really firing now for the world number one. A cross court backhand winner brings up game point before a similarly vicious backhand down the line seals the hold that leaves Lisicki serving to stay in the set

3-3 - Safina has to work really hard to hold, although another couple of double faults don't help! But the world number one does stick with Lisicki with a hold when the German hits long

2-2 - Safina really is starting to dominate the baseline rallies now - it's becoming more and more noticeable. And she holds to stay level in this set when Lisicki is once again wrong-footed on the baseline

1-1 - Safina though also cruises through her opening service game in the second set and she is beginning to dominate the baaseline rallies now with her backhand - wrong-footing Lisicki at the back of the court on game point with a cross court backhand winner

14:10 - Safina slams her racquet into the floor in disgust at earns herself a code violation for racquet abuse for her troubles. That's hardly going to improver her mood now is it?

TB5-6 - Safina comes up with a change of direction inside out forehand right into the corner to save the first and Lisicki misses a sitter of an inside out cross court forehand into the open court on the second

TB2-4 - Safina wins the first point but Lisicki quickly levels up plucking the ball out of the air to fire a forehand drive volley into the open court. Lisicki then earns the mini-break with a forehand cross court winner but a third double fault from the German undoes some of the good work, leaving Safina trailing 4-2 at the change of ends

6-5 - Safina holds when Lisicki hits long and the world number one is in the lead once again. Lisicki is definately still catching Safina out with her flat ground-strokes. But it's happening less and less often and, just minutes after stepping up to serve for the first set, Lisicki will have to serve to stay in it

4-5 - Safina holds to 15 with a very solid service game, or more importantly a game full of solid ground-strokes. The world number one hit one serve that, were this match being played on your local community courts, would actually have landed on the next door court. But Safina shrugged it off with a smile and held to force Lisicki to serve out the set

3-4 - Safina slaps down another double fault to open the game but she quickly recovers and goes on to hold when a series of Lisicki ground-strokes go astray

2-3 - Much better from Safina as she holds to 15 with a series of first serves. That's what she needs today if she is to come through against a very dangerous player. Safina also gets a little lucky with a couple of net cords - one from Lisicki that doesn't roll over the net and one on her own forehand that just does bounce over

1-2 - Lisicki breaks first! Safina is yet to find her rhythm on serve and is forced to save a couple of break points after a second double fault. She saves the first when Lisicki hits a forehand wide and the second with a backhand, off the drop shot, right onto the sideline. But Lisicki gets a third chance after a drive volley winner and this time she gets it when Safina slaps down another double fault.

1-0 - Lisicki certainly doesn't look like she'll be overawed by the situation, taking the first two points of the match with a stunning forehand passing shot on the run after Safina double faults. But the world number one recovers quickly and holds by coming up with a ferocious forehand winner down the line

13:10 - This is also Lisicki's first match on Centre Court and you never can be too sure how a player will react to that. But Safina is by no means the most comfortable on grass and Lisicki will get her chances today. It just remains to be seen whether she can take advantage of them

13:08 - These two have met each other just the once before, in the first round of the Australian Open last year. And Lisicki won that clash 7-6(4) 4-6 6-2