Break point savedpublished at 12:13 Greenwich Mean Time
Keys 5-7 6-1 2-1 Swiatek*
It's tenser than last night's round table.
Madison Keys can only smile as she misses out with a long error of her own. Deuce.
Summary
Women's singles semi-finals on day 12 of Australian Open
Madison Keys comes from behind to stun Iga Swiatek and reach final against Aryna Sabalenka
Keys saved match point in a 5-7 6-1 7-6 (10-8) over second seed Swiatek
Sabalenka beat Paula Badosa in straight sets to reach final for third year in a row
Sabalenka will also retain world number one ranking regardless of result
Use audio icon for BBC Radio 5 Sports Extra commentary (UK only)
Break point savedpublished at 12:13 Greenwich Mean Time
Break point Keyspublished at 12:13 Greenwich Mean Time
Keys 5-7 6-1 2-1 Swiatek*
Is that an unforced error? Iga Swiatek isn't under any sort of pressure as she loops a backhand long.
30-40. The first chance in the decider.
Postpublished at 12:11 Greenwich Mean Time
Keys 5-7 6-1 2-1 Swiatek*
Iga Swiatek shouts at herself after missing a backhand down the line, one of her favourite shots.
Madison Keys senses her discomfort and attacks her next serve, winning the point to go up 15-30.
Postpublished at 12:09 Greenwich Mean Time
Keys 5-7 6-1 2-1 Swiatek*
Pat Cash
Former Wimbledon champion on BBC 5 Live and BBC SoundsThere's a lot more energy here from Iga Swiatek, she has played some good points in that game.
Keys holdspublished at 12:07 Greenwich Mean Time
Keys 5-7 6-1 2-1 Swiatek*
Clutch. Iga Swiatek puts everything into a point at 30-15, but Madison Keys snookers the onrushing Pole with a brilliant backhand crosscourt passing attempt.
Keys holds to 30 and we remain on serve in the decider.
Swiatek holdspublished at 12:05 Greenwich Mean Time
*Keys 5-7 6-1 1-1 Swiatek
Well, we were after a sign.
Iga Swiatek tells the world that she's still fighting in this semi-final. The Pole races to a 40-0 lead, before holding to 15 with an overhead smash at the net.
'Massive game for Swiatek'published at 12:02 Greenwich Mean Time
Keys 5-7 6-1 1-0 Swiatek*
Pat Cash
Former Wimbledon champion on BBC 5 Live and BBC SoundsThis is a massive game now for Iga Swiatek, she's got to hang in there for as long as she can.
We know what Madison Keys is like under pressure, the balls can go everywhere, she gets tight, she hasn't played well under pressure in her career in big matches particularly.
Postpublished at 12:02 Greenwich Mean Time
Keys 5-7 6-1 1-0 Swiatek*
A win predictor has just come up on my screen. It's at 51-49, in favour of Madison Keys.
I reckon that's a little harsh on Keys. She looks to have all the momentum. This next game will give us a huge clue as to where we're at.
Postpublished at 12:00 Greenwich Mean Time
Keys 5-7 6-1 1-0 Swiatek*
A huge miss from Iga Swiatek is further evidence that she is not quite right here.
Madison Keys, however, is off to the perfect start in this final set as she smashes in a final backhand winner to complete a comfortable hold to 15.
Postpublished at 11:58 Greenwich Mean Time
*Keys 5-7 6-1 0-0 Swiatek
After an extended break as Iga Swiatek left the court, the players are back and we're ready for the decider on Rod Laver Arena!
Postpublished at 11:53 Greenwich Mean Time
*Keys 5-7 6-1 Swiatek
Russell Fuller
Tennis correspondent on BBC Radio 5 Sports Extra and BBC SoundsThis is completely out of character by the way Iga Swiatek has played throughout the tournament, I will give Madison Keys a lot of credit for that.
Game and second set Keyspublished at 11:53 Greenwich Mean Time
*Keys 5-7 6-1 0-0 Swiatek
Second seed Iga Swiatek saves the first two set points, but can't save the third, looping a backhand long.
We go to a decider and you've got to say, Madison Keys looks the favourite.
She's never reached an Australian Open final before.
Set points Keyspublished at 11:50 Greenwich Mean Time
Keys 5-7 5-1 Swiatek*
Iga Swiatek doesn't usually show much emotion, and she remains poker faced today.
But underneath she must be feeling the pressure. She hits a forehand long to slip to 0-30 on serve, and then sets up three set points with a double fault.
Swiatek breaks backpublished at 11:48 Greenwich Mean Time
Keys 5-7 5-1 Swiatek*
Ah, a first slip up in a good while from Madison Keys who double-faults at 30-30.
She then slaps a loosener out and Iga Swiatek avoids a bagel.
Postpublished at 11:47 Greenwich Mean Time
*Keys 5-7 5-0 Swiatek
Iga Swiatek last lost a set 6-0 four years ago.
She has a slither of hope at 15-15, but, despite staying in the next rally, is beaten by a forehand winner down the line out of nowhere. Keys is playing her best tennis.
Postpublished at 11:46 Greenwich Mean Time
*Keys 5-7 5-0 Swiatek
Pat Cash
Former Wimbledon champion on BBC 5 Live and BBC SoundsThis has been a very good performance from Madison Keys, she's relaxed after that first set.
Her serve percentage has been high and she hasn't been hitting the aces until this set and they are coming off her racquet really nicely.
Keys breaks once againpublished at 11:45 Greenwich Mean Time
*Keys 5-7 5-0 Swiatek
5-0.
Madison Keys continues to up the power and Iga Swiatek doesn't have an answer to it, sending a backhand into the net.
Keys will serve to level the match.
Image source, Getty ImagesBreak points Keyspublished at 11:44 Greenwich Mean Time
Keys 5-7 4-0 Swiatek*
Swiatek keeps her head down, buried underneath her white cap.
She gifts Madison Keys two more break points with a very long forehand.
Postpublished at 11:42 Greenwich Mean Time
Keys 5-7 4-0 Swiatek*
Before today, Iga Swiatek had only dropped 14 games all tournament, with seven of them coming in the first round.
She's in the midst of a real wobble, double-faulting with a tired serve into the base of the net.
Keys holdspublished at 11:41 Greenwich Mean Time
Keys 5-7 4-0 Swiatek*
Madison Keys is running away with the second set. She holds to love in double-quick time.
Pat Cash raises a fine point. Keys looks completely in the zone at the mo.
Image source, Getty Images