Simona Halep had a markedly easier outing than in round three to reach the Australian Open quarter-finals, while Angelique Kerber won a compelling contest with Hsieh Su-wei.
World number one Halep has endured a gruelling tournament in Melbourne as she attempts to break her grand slam duck, but the Romanian needed just under one hour and 20 minutes to put Naomi Osaka to the sword in round four.
A resurgent Kerber has played her way into contention for a second Australian Open title, but had to negotiate her way past a tricky Hsieh on Rod Laver Arena.
HALEP MARCHES ON
The fact that Halep is still in the tournament is testament to her fortitude. In round one, she overcame an ankle injury and a 5-2 first-set deficit to defeat Destanee Aiava, before in the last 32 she survived three match points to win a deciding set 15-13 against Lauren Davis.
On this occasion, it was a more straight-forward 6-3 6-2 win over Osaka that punched her ticket into the last eight for the first time since 2015.
"I didn't expect to reach the quarter-finals. I didn't expect also to stop the tournament, even if I was injured. I had nothing clear in my head. I just went on court, [and] take it match by match," Halep said of her progress.
KERBER COMEBACK ENDS HSIEH CHALLENGE
Kerber has been resurgent this season and looks close to the form that saw her win the Australian and US Open in 2016, having toiled last year to slip down the rankings.
Hsieh has earned plenty of plaudits throughout the tournament, though, and proved a tricky customer for the German before succumbing to a 4-6 7-5 6-2 defeat.
Kerber, who outclassed Maria Sharapova in the previous round, said of her win: "I was everywhere today, inside and outside of the court, she made me run everywhere. She played a lot of shots into the corners, made a lot of drop shots, so I was trying to simply bring it back."
KEYS A CONTENDER, PLISKOVA DEFEATS CZECH RIVAL
Madison Keys was not widely talked up as a possible contender for glory in Melbourne, which is perhaps unfair given her run to the US Open final last year.
The American, who missed out on the tournament 12 months ago due to wrist surgery, put on a masterclass in a 6-3 6-2 win over Caroline Garcia, hitting 32 winners – including nine aces – en route to a 68-minute victory that booked a date with Kerber.
Karolina Pliskova also progressed to the last eight by overcoming Barbora Strycova 6-7 (5-7) 6-3 6-2.
It was the first time Pliskova had faced her Czech compatriot, since Strycova criticised her FedCup team-mate for employing her former coach Tomas Krupa.
18. Januar 2019
|Transfer talk no distraction for Inter, says Spalletti|
|Memories of 2015 still linger for Vunipola as England begin World Cup year|
|De Bruin´s 85th-minute try consigns Kings to eighth straight loss|
|Bielsa´s Derby County dossier detail ´pretty standard´ – OptaPro chief|
|Injury-hit Madrid lose Navas to adductor issue|
|Patriots coach Belichick still gets nervous ´every week´|
|Copa del Rey draw: Barcelona to meet Sevilla in quarter-finals|
|Kohli: No one more committed to India than Dhoni|
|Brook questions Khan credibility following Crawford agreement|
|Sad Pochettino admits Bielsa is ´wrong´|
|Simeone eyes LaLiga gain after Atletico´s Copa del Rey pain|
|Rossi a no-go for Tottenham as Pochettino rules out panic buys|
|Guardiola identifies ´three or four´ midfield targets|
|Nadal encourages patience in young stars after humbling De Minaur|
|NFL playoffs 2019: 10 Opta facts for Patriots v Chiefs|
|Robertson helping Klopp learn Scottish for Dalglish chats|
|Levante appeal over alleged ineligible Barcelona player rejected|
|NFL Playoffs 2019: 10 Opta facts for Rams v Saints|
|Lowry to take three-shot Abu Dhabi lead into final round|
|Training is not for anyone else - Klopp condemns Bielsa over ´spygate´ row|
|In other countries, everybody does it - Guardiola respect remains for spying Bielsa|
|Cilic battles back to join Nadal, Federer in fourth round|
|Klopp: Trent unbelievable for playing through pain|
|Faulkner provides super start and fabulous finish to sink Scorchers|
|Ref admits error in key foul call on Lonzo Ball in Lakers-Thunder game|
|Marina Granovskaia is working very hard – Sarri ´confident´ of January signings|
|Tuchel confirms Rabiot out of PSG contention|
|Madrid derby kick-off confirmed for February 9|
|Benzema fit to face Sevilla despite broken finger, Solari confirms|
|Bournemouth boss Howe says no offers received for Wilson|
|Kerber cruises after Wozniacki, Sabalenka upsets|
|Mbappe a great player and great person, says beaming Beckham|
|Gracia confident someone will step up if Doucoure leaves for PSG|
|Albrighton signs new Leicester deal|
|Niasse joins Cardiff on loan from Everton|
|Hendrick credited with Fulham strike|
|Western Sydney Wanderers 1 Adelaide United 2: Goodwin compounds Wanderers woes|
|Chahal and Dhoni carry India to ODI triumph|
|Levante report Barcelona for alleged use of ineligible player in Copa del Rey|
|Solskjaer regrets Sanchez´s Reading setback|
|Tomic brands Hewitt a ´liar´ as feud continues|
|Ruthless Nadal thrashes teenager De Minaur|
|Wozniacki enjoyed status as defending champion in Melbourne|
|Solskjaer backs Mourinho to return to football´s big time|
|Murray to miss Open 13 Marseille|
|Solskjaer´s United turnaround no easy task, says Hughton|
|The big Friday Premier League quiz|
|How James Harden´s 2018-19 numbers compare to his MVP campaign|
|It´s insane! - Tsitsipas excited to face ´legend´ Federer|
|Sharapova ends Wozniacki title defence|
|American teen Anisimova sends records tumbling at Aus Open|
|Lakers survive Ball´s gaffe to beat Thunder in OT|
|Federer expects ´athletic´ and ´attacking´ Tsitsipas clash|
|Alcacer is fit and available – Favre|
|Fantastic Federer breezes past Fritz|
|Pogba happy with Man United approach under Solskjaer|
|Mickelson leads Desert Classic, ties career-low with 12-under 60|
|Warriors´ Durant on Curry: He´s a once-in-a-generation, once-in-a-lifetime talent|
|Patriots owner says Brady is greatest player, not just quarterback, of all time|
|Inglis to retire from representative duty this year, NRL in 2020|
|Is Beal better without Wall? Wizards star says it´s ´absolutely nonsense´|
|Rockets C Capela undergoes thumb surgery, expected back after All-Star break|
|This Week in U.S. Sports: Irving apologises, Machado´s agent isn´t happy|
|Knicks in woeful shape, but 2019 could still be bright in New York|
|Valverde not worried about Levante´s Copa appeal|
|Nowell an option for England at flanker, reveals Jones|
|Pellegrini: Arnautovic available for the right price|
|Knicks throw away 19-point lead and lose on last-second goaltending call|
|Tebow invited back to Mets´ major league spring training|
17. Januar 2019
|Canelo and Jacobs agree unification fight|