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Kostyuk, Mboko and Rybakina Through to Canadian Open Quarterfinals

Montreal’s quarterfinal lineup is set with Marta Kostyuk meeting Elena Rybakina, teenager Victoria Mboko also advancing after upsetting top seed Coco Gauff

Marta Kostyuk of Ukraine reacts during her game against McCartney Kessler of the United States during round of 16 tennis action at the National Bank Open in Montreal, Saturday, Aug. 2, 2025. THE CANADIAN PRESS/Christinne Muschi
Aug 2, 2025; Montreal, QC, Canada; Coco Gauff (USA) congratulates Victoria Mboko (CAN) for her win in a fourth round match at IGA Stadium. Mandatory Credit: David Kirouac-Imagn Images
Aug 2, 2025; Montreal, QC, Canada; Victoria Mboko (CAN) reacts after winning her fourth round match against Coco Gauff (USA) at IGA Stadium. Mandatory Credit: David Kirouac-Imagn Images
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Overview

  • Marta Kostyuk rallied from a set down to beat Daria Kasatkina 3-6, 6-3, 7-6(4), sealing the win with a remarkable tiebreak winner after slipping on court.
  • Elena Rybakina overcame nine double faults to edge Dayana Yastremska 5-7, 6-2, 7-5 and will next face Kostyuk in the quarterfinals.
  • Eighteen-year-old Victoria Mboko saved four break points and defeated Coco Gauff 6-1, 6-4, becoming the first Canadian to topple a No. 1 seed at the National Bank Open.
  • The quarterfinal field blends breakthrough performances by rising stars with veteran resilience as players vie for crucial momentum ahead of the US Open.
  • Kostyuk’s post-match handshake with Kasatkina acknowledged the latter’s renunciation of her Russian sports citizenship and added a political dimension to the tournament.