Iga Swiatek def. Marta Kostyuk 3-6, 6-1, 6-2 — Canadian Open 2026 R16

Match recap

Iga Swiatek defeated Marta Kostyuk 3-6, 6-1, 6-2 in the R16 of the Canadian Open 2026.

The break points dried up for Kostyuk after the opening set. The No. 10 seed converted all four she earned in a set that produced eight breaks of serve, then went 0 of 9 the rest of the way, while Swiatek won seven of her 12 return games. The first serve did the repairing. Swiatek won 9% of her first-serve points in the opener and 68% in the second, breaking in game 2 for 2-0 and again in game 6 for 5-1. That was the first set she had dropped all week, and Kostyuk's lone win in four meetings on record remains a clay-court one. Kostyuk saved five match points before the end, but Swiatek closed inside 2 hours, 3 minutes and books a quarterfinal with then-WTA No. 18 Diana Shnaider.

Match stats

Marta Kostyuk: 1 ace, 50% first serves, 0 double faults, 4/13 break points. Iga Swiatek: 0 aces, 65% first serves, 2 double faults, 7/15 break points.

Profiles: Marta Kostyuk · Iga Swiatek — Canadian Open 2026

Head-to-head

Marta Kostyuk and Iga Swiatek have met 5 times, with Iga Swiatek leading the head-to-head 4–1.

• French Open 2026 R16 — Marta Kostyuk won 7-5, 6-1
• Cincinnati Open 2025 R32 — Iga Swiatek won (walkover)
• Cincinnati Open 2024 R16 — Iga Swiatek won 6-2, 6-2
• Indian Wells 2024 Semifinal — Iga Swiatek won 6-2, 6-1