Hello and welcome to LIVE coverage from the third of the women's quarter-finals between seventh seed Angelique Kerber and world number 14 Victoria Azarenka.

Kerber is through to the last four where she awaits the winner between Johanna Konta and Zheng Shuai.

Azarenka 3-6 5-7 Kerber. Game, set and match! A backhand winner down the line helps Azarenka level up at 30-all before Kerber brings up her first match point when the Belarusian goes just long with a cross court forehand. And that is all it takes for the German - she is through to her first Aussie Open semi-final, flicking a forehand passing shot that dips over the net and draws the netted backhand response from Azarenka.

Azarenka 3-6 5-6 Kerber. Wow. Kerber takes her fourth game in a row. The German was a double break down in this second set but is now just one game away from her first ever win over Azarenka and her first Australian Open semi-final as well. Azarenka just looks totally perplexed as she misses another backhand to hand Kerber a game point before a netted backhand return from the Belarussian helps Kerber hold.

Azarenka 3-6 5-5 Kerber. Break. Kerber sets up to pull the trigger on a mid-court backhand only to dump the ball into the bottom of the net. A booming backhand winner from the German down the line denies Azarenka on a fourth set point and brings Kerber level at deuce. Another huge return from the German draws the error from Azarenka and allows Kerber to bring up yet another break point. This to get things back on level terms in this second set. And that one change to break back is all Kerber needs, the German thumping a forehand winner across court to break for her third consecutive game.

Azarenka 3-6 5-4 Kerber. From three set points down, Kerber has won nine of the last 10 points, as she belts a change-of-direction backhand down the line on her way to another service hold. Azarenka will have another chance to serve out this second set after the change of ends, however.

Azarenka 3-6 5-3 Kerber. Break. Azarenka looks like she is cruising through a hold to level this match at one set apiece. The Belarusian even earns herself three set points. But Kerber suddenly becomes the player she was at the start of the opening set and belts four consecutive winners, concluding with a backhand winner down the line to earn herself a break back point. A huge double fault from Azarenka gives away the game and Kerber is right back in this second set, albeit it still trailing by a break and needing to serve to keep this set alive.

Azarenka 3-6 5-2 Kerber. Break. Fresh from seeing off break point against her serve, Azarenka suddenly has more of her own when she belts a forehand winner down the line. And one chance is all it takes, Kerber going wide with a forehand volley across court. Azarenka will serve for the second set.

Azarenka 3-6 4-2 Kerber. Azarenka doesn't help herself when she slaps down a double fault before Kerber takes full advantage of it with a forehand winner to bring up break point. Azarenka saves it with a trip into the net and a forehand volley winner before handing Kerber a second chance to get the break back when she nets a forehand. But the German can't take advantage of this one either and Azarenka goes on to hold when Kerber fails to find the court with a backhand.

Azarenka 3-6 3-2 Kerber. An ace from Kerber helps her on her way to another solid service hold to maintain the deficit to just the one break.

Azarenka 3-6 3-1 Kerber. Consecutive backhand winners from Azarenka help her on her way to another service as she continues to battle her way back into this match.

Azarenka 3-6 2-1 Kerber. Kerber follows Azarenka's easiest service game of the match, with a simple service hold of her own. Azarenka picks up one point with a blistering backhand winner but Kerber belatedly gets her set underway with a hold.

Azarenka 3-6 2-0 Kerber. Azarenka races through her easiest service game of the match, sealing a love hold witn an ace to consolidate her early break.

Azarenka 3-6 1-0 Kerber. Break. A forehand volley winner from Azarenka brings up two break points after a double fult from the German. Kerber saves the first with a backhand winner but she can do nothing about the second and Azarenka has the early break in this second set.

Azarenka 3-6 Kerber. Set. Three set points to Kerber ... Azarenka saves all three of them though, the last with a forehand volley winner before bringing up a game point with another trip into the net for a forehand vollley winner. Kerber denies Azarenka on a game point by easily getting up to a drop show from the Belarusian and whipping a forehand winner across court. A netted Azarenka backhand follows and it's a fourth set point for the German. And this time Kerber does seal the set, Azarenka going long across court with a backhand.