Elina Svitolina moved a step closer to back-to-back WTA Rogers Cup titles, while Simona Halep reached the semi-finals.
Defending champion Svitolina rallied to beat 14th seed Elise Mertens in straight sets in Montreal on Friday.
World number one and top seed Halep steamrolled Caroline Garcia after overcoming a difficult test.
US Open champion Sloane Stephens and Ashleigh Barty also advanced to the final four of the tournament.
SVITOLINA OVERCOMES DEFICIT
Ukraine fifth seed Svitolina survived to beat Mertens 7-5 6-3 on Friday.
Svitolina was down 4-0 in the first set before rallying to oust the Belgian in their quarter-final clash thanks to 25 winners.
"I think [Mertens] started pretty well," said Svitolina, who avenged her Australian Open quarter-final defeat.
"She was striking the ball and everything was going in for her. I just had to accept and move from there. I was just trying to stay longer in that set. I think it really helped me to get back my rhythm, and then I was just going more and more for my shots. I think this was the key."
Standing in the way of Svitolina and another Rogers Cup final is Stephens.
STEPHENS CRUISES INTO SEMIS
It was a straightforward match for third seed Stephens, who swept past Anastasija Sevastova 6-2 6-2.
Stephens hit 18 winners, served at 75 per cent throughout and converted five of nine break points to reach back-to-back Rogers Cup semis.
"I've been playing well and it's a good start here to the US Open Series. I'm happy to be back in North America and playing on hard courts, and I'm hoping for some more good results," Stephens said.
HALEP SHOWS CLASS TO SEE OFF GARCIA
A fourth successive Rogers Cup semi-final beckons for Halep after the Romanian star defeated Garcia 7-5 6-1.
Halep overcame a challenging opening set to blitz the Frenchwoman in 88 minutes.
"The first set was really tough," Halep told reporters. "I just didn't give up at all in the first set. After I took it, I felt more confident. I felt that I'm moving better, I'm playing better, stronger. [Garcia] went a little bit down with energy after she lost that set."
Barty awaits after the Australian beat Kiki Bertens 6-3 6-1.
|Ponzio: River players will be ´idolised´ for Libertadores success|
|Champions League permutations: How Inter, PSG and Liverpool can progress|
|Kohli: India were better and deserved to win|
|Bears shut down Goff, Rams|
|India survive dramatic finish against Australia|
|Klopp calls for electric Anfield atmosphere against Napoli|
|Saints clinch back-to-back NFC South titles, Bears trump Rams|
|Bucks improve to 2-0 against Raptors with win in Toronto|
|Black Caps include Patel for Sri Lanka Tests|
|Maidana: River want Real Madrid clash|
|Cowboys top Eagles in OT behind stellar Cooper display|
|AC Milan evaluating Fabregas signing – Leonardo|
|WATCH: Steelers´ chance at game-tying field goal slips away|
|Hayne will plead not guilty to charges, says lawyer|
|Boca boss Schelotto: The only thing I feel is sadness|
|Cardinals´ Fitzgerald makes NFL history with most receptions for one team|
|River Plate´s Copa Libertadores star Gonzalo Martinez confirms January departure|
|Klopp: I was never worried about Salah´s form|
|Packers QB Rodgers sets NFL record for most passes without an interception|
|World Cup bulking hampered Man United form – Lukaku|
|Leonardo rules out Ibrahimovic Milan return|
|Warriors´ Green to return against Timberwolves|
|I feel for him… we´ll make it work – Butler responds to Embiid´s frustration|
|Torino draw no missed opportunity for misfiring AC Milan, claims Gattuso|
|We´ll always be linked together forever - Wade reflects on playing with James before final match-up|
|O´Sullivan wins record seventh UK title|
|Chiefs secure playoff berth, Saints win NFC South|
|River Plate 3 Boca Juniors 1 (aet, 5-3 agg): Quintero and Martinez clinch Libertadores title in extr|
|WATCH: Chiefs QB Mahomes throws no-look pass|
|Dolphins defeat Patriots on miraculous final play|
|Kizzire eagle snatches QBE Shootout victory|
|AC Milan 0 Torino 0: Donnarumma shines, Cutrone misses late chance|
|Back to the drawing board for West Indies - Chase|
|Copa Libertadores: Messi and Griezmann among stars in Madrid for River-Boca Superclasico|
|Brady sets NFL record for most career TD passes|
|Copa Libertadores: Tevez named on Boca bench for Superclasico final|
|Premier League needs VAR, right now! - Benitez fumes over Dean´s decisions|
|McCall expects Itoje to fit for the Six Nations|
|Solari salutes Real Madrid character after ´ugly´ Huesca win|
|Berbatov defends under-fire Lukaku|
|Sarries crush Blues to maintain unbeaten start|
|Newcastle United 1 Wolves 2: Doherty punishes Yedlin red with late winner|
|Deeney jokes he´ll ´smash´ former Watford star Richarlison|
|Huesca 0 Real Madrid 1: Bale ends drought as Solari´s men edge to victory|
|Ponting: Umpires not looking at no-balls|
|Bale ends longest LaLiga goal drought|
|Porter backs Brees for MVP, Saints for Super Bowl|
|Verstappen eyeing 2019 title fight|
|Wall ´shouldn´t have played´ against Cavaliers after scoring just one point|
|Hazard: Man City the best team in the Premier League despite Chelsea win|
|LeBron explains why he gave a Grizzlies employee his game-worn shoes|
|Bangladesh cruise to ODI victory as seamers punish Windies|
|Football will win over violence, claims CONMEBOL president|
|Alcorcon support Reus Deportiu over unpaid players|
|Saponara explains cheeky celebration after last-gasp leveller|
|Godin and Filipe Luis return to Atletico training|
|Kick It Out condemns alleged racist abuse of Sterling|
|Emotional Oosthuizen clinches South African Open title|
|The Sunday Seven - 7 Key Opta facts for NFL Week 14|
|Martino salutes Atlanta´s grand plan|
|India´s tail must show greater application - Bangar|
|Mourinho: Diogo Dalot can be new Gary Neville|
|Sterling hits out at media coverage of black players|
|Lyon roars with defiance as Australia aim for unlikely victory|
|Bulls coach Boylen: Hooked starters ´embarrassing´ in record loss|
|Martinez pays tribute to Martino, Almiron after MLS Cup glory|
|LeBron: Final Wade matchup will be bittersweet|
|Alvarez-Kovalev rematch set for February 2|
|Newcastle Jets 2 Brisbane Roar 0: Sheppard, Jair score first A-League goals|
|India close in on victory in first Test|