Australian Open champion Caroline Wozniacki surprisingly joined Maria Sharapova in exiting the WTA Rogers Cup, but world number one Simona Halep advanced to the quarter-finals.
Rising Belarusian Aryna Sabalenka knocked out world number two Wozniacki in three sets before losing her last-16 clash later on Thursday.
Former world number one and five-time grand slam winner Sharapova was no match for sixth seed Caroline Garcia in Montreal.
French Open champion Halep played twice on Thursday and won both matches to reach the last eight at the expense of an ailing Venus Williams.
WOZNIACKI CRASHES OUT
Wozniacki had three match points but suffered a 5-7 6-2 7-6 (7-4) loss to Sabalenka.
This match was initially scheduled for Wednesday but rain forced it to be postponed until Thursday.
And the Dane – playing for the first time since Wimbledon – proved wasteful as Sabalenka rallied from a 5-3 deficit in the final set to prevail after two hours, 31 minutes.
"I didn't win any of the match points," Wozniacki said. "I had an opportunity. I didn't get it… I feel like I would have felt after the finals: it's obviously disappointing losing a match like this when you have the opportunity."
Sabalenka then lost 2-6 7-6 (7-1) 6-0 to 14th seed Elise Mertens, who will meet defending champion Elina Svitolina in the last eight.
GARCIA EASES PAST SHARAPOVA
It was a routine outing for Frenchwoman Garcia, who swept aside Sharapova 6-3 6-2.
Garcia was a class above against the Russian star as she moved through to her seventh quarter-final of the season.
Top seed Halep stands in the way of Garcia a spot in the Rogers Cup semi-finals.
After surviving the challenge of Anastasia Pavlyuchenkova in a rain-affected match, Halep defeated Williams – who was struggling with a knee injury – 6-2 6-2.
"I saw that Venus was not feeling great, so we cannot talk about this match too much," Halep said. "But I'm happy even in this situation I could win the match."
SVITOLINA KEEPS TITLE DEFENCE ALIVE
Defending champion and fifth seed Svitolina secured a quarter-final berth after accounting for Johanna Konta 6-3 6-4.
Svitolina won the last four games of the match from a break down to advance in less than 90 minutes.
Konta was back on the court having completed a 6-3 6-1 win over two-time major winner Victoria Azarenka.
Meanwhile, US Open champion Sloane Stephens moved into the next round, but Petra Kvitova was beaten.
|Scherzer, Harper lead Nationals past Marlins|
|Djokovic and Federer join Cilic, Goffin in Cincinnati semis|
|Federer outlasts recovering Wawrinka|
|WATCH: Djokovic wins match, loses car|
|Bolt arrives in Sydney for A-League trial|
|Red-hot Bertens beats Svitolina, Halep marches on|
|Snedeker preserves Wyndham lead|
|Halep hits back to torment Tsurenko|
|Raonic fails to break Djokovic stranglehold|
|Emery seeks more ´demanding´ Ozil|
|CAF Champions League Review: Wydad, Al Ahly & TP Mazembe qualify|
|Stephen Curry wants to finish his career with Warriors|
|Hazard among Europe´s best but can improve, says Sarri|
|Tigers boost top-two hopes, Giants close in on fourth|
|Birmingham City 0 Swansea City 0: Monk´s men held despite dominance|
|Inter taking legal action against Tebas over Modric transfer comments|
|Serie A transfer round-up: Zaza joins Torino, Parma sign Gervinho|
|Roma chief Pallotta makes light of De Laurentiis claim|
|Federer starts double-header by seeing off resilient Mayer|
|Ospina joins Napoli on loan from Arsenal|
|Klavan completes Cagliari switch|
|Djokovic holds out against Dimitrov as Raonic awaits|
|New dates confirmed for postponed Serie A fixtures|
|Halep breezes past Barty to set up Tsurenko clash on same day|
|Olesen unable to capitalise on strong start as Jamieson, Waring go clear|
|Hoffenheim tie Kramaric to four-year deal|
|Mina to miss Southampton clash while Gomes is ´weeks´ away|
|Barcelona coach Valverde dismisses Pogba speculation|
|Valverde not prioritising Champions League over defending Barcelona´s LaLiga title|
|Allegri thanks outgoing Juventus icon Marchisio|
|Pants display from Beef? Johnston forced into change of trousers in Sweden|
|Tour champion Thomas has Welsh velodrome named in his honour|
|Gloucester surprised and disappointed by RFU´s swift Cipriani charge|
|Storm skipper Smith´s back injury not ´too serious´|
|Spurs fixture switch doesn´t appeal to Guardiola|
|Brazil call up Andreas Pereira & Arthur but omit Man City stars|
|Mbappe returns to PSG squad, Kehrer set for debut|
|No Messi in Argentina squad as Simeone wins first call-up|
|England man Roy embarrassed by self-inflicted facial injury|
|Atletico Madrid fined for breaching third-party regulations|
|Cipriani charged by RFU after common assault conviction|
|No contact, no negotiation - Leonardo denies AC Milan deal for Milinkovic-Savic|
|Kovacic set for Chelsea debut against Arsenal|
|Fury´s father restrained as Wilder crashes Pianeta weigh-in|
|Kohli and Bumrah fit for win-or-bust Test|
|Stokes ready and desperate to help England, says Root|
|Salah, Mane and Firmino not in competition says Klopp|
|Darmian staying at Manchester United, says Mourinho|
|Guardiola cites fatigue as factor for stricken De Bruyne|
|Kovac approves Rudy departure from bloated Bayern midfield|
|Klopp insists no player leaves without his approval amid Klavan rumours|
|Real Madrid complain to FIFA over Inter´s alleged Modric approach|
|Mourinho ´has never been so happy´ with unsettled Pogba|
|Manly implode amid Barrett uncertainty, Storm´s Smith injured|
|Sarri certain Hazard is staying at Chelsea|
|Liverpool, Champions League, Manchester derby - The matches De Bruyne will miss due to injury|
|Campbell joins Frosinone from Arsenal on permanent deal|
|Schalke sign Lille´s Mendyl to end left-back hunt|
|Stokes back in England team as Curran drops out|
|Ronaldo doesn´t guarantee Juventus the title, warns Allegri|
|Tuchel keen to guide PSG star Mbappe after World Cup heroics|
|Yuri: I can see Neymar joining Real Madrid|
|Milan pounce for Castillejo as Bacca joins Villarreal permanently|
|De Bruyne to miss three months for Manchester City|
|Manchester City talent Arzani completes Celtic loan|
|I know how precious my career is, says regretful Cipriani|
|Paulo Bento named new South Korea coach|
|Milan complete Laxalt deal|
|Poyet suspended by Bordeaux after outburst against board|
|Tuchel will let Neymar and Cavani settle penalties themselves|