4-5 - More errors from Ivanovic allows Zheng to level at 15-15 and again at 30-30. But another forehand winner gives her game point and she takes it when Zheng sends a service return long.

3-4 - Ivanovic's serve is just too hot for Zheng and she takes the game to love. The number one seed looks focused and determined but has clearly got her hands full with the mobile Chinese and is still a break down!

2-3 - Ivanovic saves one break point with an ace on her second serve. Gutsy or what! But Zheng is making her work hard for every point and breaks her again when Ivanovic is wide with a backhand, which she challenges to no avail!

1-2 - Oh dear! Yet another netted backhand from Ivanovic at 30-40 down hands Zheng an early break of serve, and the world number one is having a torrid time here on Court Number One.

1-0 - Ivanovic starts with a hold to 30, but she still can't iron the errors out of her game, letting Zheng off the hook at 40-15 with a weak volley.

40-40 - Better from Ivanovic. A flat forehand half-volley to the bottom-left corner gives her a 0-30 lead, and then Zheng puts a crosscourt backhand inches wide to give Ivanovic 15-40 and two break points. She wastes both with backhands that fly beyond the baseline, thereby bringing up Deuce. A forehand that bounces of Zheng's frame and goes wide gives Ivanovic another break point, but she puts a forehand into the net to let another chance go begging.

40-40 - Too many unforced errors from Ivanovic, and Zheng finds herself 0-30 up. A forehand winner closes the gap to 15-30 before a long backhand from Zheng levels the game. A wild forehand from Zheng gives the top seed 40-30, but then Ivanovic nets a backhand to bring up Deuce. A brilliant forehand winner from Zheng catches Ivanovic out of position at the net, but Ivanovic saves the break point with a stylish forehand winner.

40-40 - Ivanovic goes 15-30 up but Zheng levels with a forehand from the net that pitches between the Serbian's feet and is unsuccessfully challenged. A miscue from Zheng then hands Ivanovic an immediate break back point, but she nets a forehand in the next point to take the game to Deuce.

1-2 - Zheng's double-handed backhand looks like a potent weapon, and she holds when Ivanovic nets a forehand that hits the net cord and drops on her side of the court at 40-15 down.

0-1 - Zheng opens with a comfortable hold to 15.

16:57 - The players emerge on court, both in all white. It's been a grey day in SW19 and we had a lengthy rain delay earlier on, but it's dry for now.