A full wrap of the days play can be found here.
Wozniaki/Williams v Van Uytvanack/Flipkens (7-6, 6-2)
11pm - A Wozniacki winner gives her and Williams the win, they storm into the final.
10:41pm - The fan favourites break early in the second, they lead 2-1.
10:28pm - After a cracking tie break, it's over - the dream team get up after an hour they have a set lead.
10:15pm - Lovely from Williams, they break to set up a tiebreak.
10pm - They break again and the two Belgiu's will serve for the set.
9:43pm - The Belgium pair have broken back.
9:31pm - They also break the next game to extend their lead.
9:29pm - A Wozniacki winnner ends the first game and the favourites take a 1-0 lead.
Up next is the doubles semi-final between Caroline Wozniacki and Serena Williams v Alison Van Uytvanack and Kirsten Flipkens.
Genie Bouchard v Amanda Anisimova (2-6, 6-3, 4-6)
9:06pm - That's it, Anisimova has held her nerve to take out the match in just over two hours to set up a date with Serena Williams in the semi-final.
9:02pm - Absolute slugfest this game was - over nine minutes long and it's the young American who takes it out and will serve for the match.
8:51pm - Anisimova holds, she is forced to work, but she gets it, what a match we have here.
8:47pm - Lovely from genie, shes holds to keep the lead in the match, lovely forehand winner to win the game.
8:44pm - BIg hold from the American, she saves two break points and we are on serve in the third.
8:37pm - She holds serve, after six-straight breaks of serve, we have a hold, much better from the Canadian, can the American hold now?
8:33pm - This is crazy, another break of service, Bouchard is very aggressive in her retuns and its paying off - she just needs to hold now.
8:29pm - Too strong from Anisimova and once again theres a break of serve.
8:24pm - Wow, another service break, and Genie is back on terms in the final set.
8:22pm - Bouchard's opening service game is broken, Anisimova draws first blood in the final set.
8:17pm - Cracking game that one, Bouchard breaks to take the set and all the momentum into the final set.
8:14pm - Anisimova breaks back... another one.
8:08pm - A huge forhand winner gives Bouchard another break and shes back up by a double break and will serve for the set.
8:06pm - Just like that, Anisimova break back to love - great work from the American.
8:02pm - Another break from Bouchard, lovely from the Canadian, she has a double break lead in this set.
7:59pm - Genie holds, she looks much better this set - Anisimova still playing very nicely.
7:50pm - Bouchard starts the second set as she needed to - with a break.
7:44pm - Anisimova breaks Bouchard, and she wraps up the first set, 6-2.
7:38pm - Bouchard saves a couple of break points to hold serve - trails by the one break.
7:30pm - Much better from Bouchard and she holds serve to get on the scoreboard.
7:19pm - Anisimova makes short work of the return game and breaks Bouchard. A double fault to end the second game.
7:16pm - Good tennis from both players there, Bouchard had here chances but it's Anisimova who holds serve.
7:01pm - Both players are heading out on court now.
The last quarter-final of the day will begin at 7pm, with Eugenie Bouchard taking on Amanda Anisimova.
Caroline Wozniacki v Julia Goerges (6-1, 6-4)
4:55pm - Wozniacki servng to close out the match, and she does excatly that. Emphatic win, as she sends the defending champion packing.
4:45pm - Wozniacki breaks to go up 4-3.
4:15pm - First set in the bag for the Dane.
4:03pm - Goerges gets on the board but it's a long way back for her in this set now, down 1-4.
3:45pm - Wozniacki holds serve to open, then immediately breaks Goerges' service.
3:32pm - Blockbuster showdown coming up here. The players are on court and warming up, we'll be underway momentarily.
The next quarter-final between Caroline Wozniacki and Julia Goerges will get underway at 3:30pm.
Serena Williams v Laura Siegemund (6-4, 6-3)
2:55pm - Game, set, match, Williams. The Great One books her semi-final berth.
2:49pm - Williams with another break, she's rolling now. About to serve for the match.
2:34pm - Williams saves two break points to hold serve. 2-3. She then breaks in the next game to square the ledger.
2:22pm - Siegemund scores her first break of the match to take the advantage.
2:15pm - Williams staved off a break point to hold serve at the start of the second set.
2:05pm - Williams earns the first break of the game to clinch the opening set.
1:55pm - Both players continue to hold serve.
1:41pm - Some excellent tennis here early, tight contest.
1:31pm - Williams holds serve to get us started. Siegemund does the same.
1:20pm - Player intros done and dusted, we'll be into the next quarter-final shortly.
Jessica Pegula v Alize Cornet (6-0, 3-2)
12:56pm - Cornet drops another break then immediately makes her way to her opponent's chair to concede the match due to injury. She hung in there as long as she could, well played.
Meanwhile, Pegula becomes the first to book a semi-final spot.
Serena Williams and Laura Siegemund will be up next at 1:15pm.
12:50pm - Cornet's coach attempts to discourage her player from continuing in between games, but Cornet is hearing none of it. Kudos.
12:44pm - Cornet holds serve to claim her first game of the match.
12:37pm - The physio is out on court and having a long chat with Cornet here. But the Frenchwoman won't bow out just yet, she's back up and ready for the second set.
12:33pm - And just ike that, the first set is in the bag for Pegula. Cornet is sturggling out there, looks to be carrying some kind of injury.
12:27pm - Scratch that, it's a triple break. Pegula goes 5-0 up while Cornet seems to be all at sea mentally.
12:20pm - Make that a double break. Pegula races to a 3-0 lead.
12:11pm - Ideal start for the American, as she breaks Cornet's serve to go up 1-0.
12pm - Both players out on the court are warming up for the first of a slate of quarter-finals at Stanley St.
Kia ora, good morning and welcome to Newshub's live coverage of the ASB Classic women's tournament from Auckland, where the singles draw enters quarter-finals.
Star drawcards Serena Williams and Caroline Wozniacki are both still alive, and could face 'double trouble', if their run of form continues.
Williams overcame dogged American Christina McHale in three sets on Thursday to book a meeting with Germany's Laura Siegemund today. Wozniacki barely survived a 2h 19m scrap with former champion Laura Davis last night and will now face two-time titleholder Julia Goerges.
Then, the 'besties' will combine for a doubles semi-final this evening. At this rate, Williams and Wozniacki could conceivably face each other in Sunday's singles final, as well as teaming up for the doubles final.
That's still a long way off, though, with a pair of Germans and a pair of Belgians standing in their path today.
The full ASB Classic schedule for Friday is:
Jessica Pegula (USA) v Alise Cornet (France)
1-Serena Williams (USA) v Laura Siegemund (Germany)
Not before 3:30pm
5-Caroline Woznianki (Denmark) v 4-Julia Goerges (Germany)
Not before 7pm
2-Amanda Anisimova (USA) v Eugenie Bouchard (Canada)
Serena Williams (USA)/Caroline Wozniacki (Denmark) v Kirsten Flipkens (Belgium)/Alison Van Uytvanck (Belgium)
Gauff scolds dad for cussing during ASB Classic defeat
Tennis dads are notoriously tough on their prodigious progeny, especially on the women's professional tour - but American teen 'Coco' Gauff had the last laugh on hers during an early exit from the ASB Classic on Thursday.
The 15-year-old sensation, ranked 67th in the world, is widely regarded as the future of women's tennis, but came unstuck in the Auckland winds, falling 7-5 2-6 3-6 to steady German Laura Siegemund in the second round.
But she was still able to see the funny side of a 2h 14m struggle that saw father Corey Gauff trying everything he could to spark his daughter during breaks in play.
"I was pretty sure he said a curse word and I told him not to curse," she told media afterwards. "I said he had to watch his mouth, because his New Year's resolution is to curse less and he can't do that on TV.
With a long career ahead of her, Gauff seems to understand the lessons she learns now are important - but not as key as retaining her love for the game and her relationship with her support team.
"That's why I play tennis - to have fun. The coaching break... [Siegemund] was taking a toilet break and I had only seen [her dad] a few games ago, so it wasn't so much for advice, but so I wasn't sitting out there, waiting for her to come back."
The exchange was comparatively civil compared to the messy family feud that ensued during the ATP Cup in Australia this week, when Greek Stefanos Tsitsipas injured his father/manager during a courtside trantrum and was roundly scolded by his mother from the stands.
"It happened accidentally," Tsitipas explained afterwards. "I didn't mean to do it, and straight away forgot about it and moved on from there.
"I wasn't aiming to do that, so it went out of control unfortunately."
Gauff will take valuable lessons away from her first visit to New Zealand, as she prepares for the Australian Open later this month.
"The biggest part of my conversation with dad after the match... he said I didn't play like I played in practice. I didn't play the right way and if I was, it would have been fine."
Defeat robbed Gauff of an opportunity to meet idol Serena Williams for the first time on court in the ASB Classic quarter-finals. The youngster achieved her breakthrough win over older sister Venus Williams in the first round at Wimbledon last year.