Mandatory Credit: David Kirouac-Imagn Images

Elena Rybakina vs. Marta Kostyuk Head-to-Head, Prediction, and Betting Odds for WTA National Bank Open 2025 Quarterfinals

Rybakina and Kostyuk Set for High-Stakes Quarterfinal in Montreal

Mandatory Credit: David Kirouac-Imagn Images

Ninth seed Elena Rybakina will take on 24th seed Marta Kostyuk in the quarterfinals of the National Bank Open in Montreal. Rybakina, after receiving a first-round bye, sailed through her early rounds with straight-set wins over Hailey Baptiste and Jaqueline Cristian before being pushed to three sets by Dayana Yastremska.

Rybakina 🤝 Montreal QFs

Elena Rybakina regroups to fight past Yastremska 5-7, 6-2, 7-5 for a place in the quarterfinals!#OBN25 pic.twitter.com/ys0HoYzp7M
— wta (@WTA) August 2, 2025

The Kazakh has steadily climbed back to form after a mid-season lull, having captured the title in Strasbourg and reached semifinals in Abu Dhabi, Dubai, and Washington. Her numbers are as solid as her baseline game, with 276 aces, 73.4% first-serve points won, 43% return points won, and a 41.7% break point conversion rate across 46 matches.

Kostyuk has crafted a stirring underdog run of her own. The Ukrainian knocked out Marketa Vondrousova, then battled past 15th seed Daria Kasatkina and 28th seed McCartney Kessler, all in gritty three-setters. Though her season has seen fluctuating results, she’s brought strong metrics to Montreal with 92 aces in 31 matches, 64.9% first-serve points won, 44.5% return points won, and a 44% break point conversion rate.

Marta Kostyuk with an OUTRAGEOUS point against Daria Kasatkina in Montreal.

She falls on the ground mid-rally. 🤯

Few players are as scrappy as her.

Marta things. 💅🏻

pic.twitter.com/xiehQ6CuWZ
— The Tennis Letter (@TheTennisLetter) July 31, 2025

Elena Rybakina vs. Marta Kostyuk Head-to-Head Record

Elena Rybakina holds a 2-1 edge in her head-to-head against Marta Kostyuk. Their rivalry began at Adelaide #1 in 2023, where Kostyuk rallied from a set down to notch a memorable win. But since then, it’s been all Rybakina, the Russian-born Kazakh powering through in straight sets at both the 2023 US Open and the 2024 Stuttgart final, asserting dominance.

Year	Event	Round	Winner	Score
2024	Stuttgart	Final	Elena Rybakina	6-2, 6-2
2023	US Open	Round of 128	Elena Rybakina	6-2, 6-1
2023	Adelaide #1	Round of 16	Marta Kostyuk	6-7(5), 6-2, 6-3

Elena Rybakina vs. Marta Kostyuk Comparison

Elena Rybakina	Category	Marta Kostyuk
12	Current Ranking	28
364-157	Career W-L	231-144
33-14	YTD W-L	17-16
9	Career Titles	1
1	Grand Slams	0
1	YTD Titles	0

Elena Rybakina vs. Marta Kostyuk Prediction

Rybakina’s renewed consistency and power-driven baseline game give her the edge, but expect Kostyuk to push her with aggressive shot-making.

Rybakina d. Cristian 6-0 7-6(5)

Elena was flawless in the 1st set.

She’s growing in confidence & form this week.

It’s going to be very interesting if she can find her best tennis in time for the U.S. Open.

✅2nd Montreal R16

Still the purest ballstriker in the sport.

🇰🇿🩵 pic.twitter.com/g1jZ1z9yOf
— The Tennis Letter (@TheTennisLetter) August 1, 2025

Prediction: Elena Rybakina in straight sets

Elena Rybakina vs. Marta Kostyuk WTA National Bank Open 2025 Betting Odds

With Rybakina heavily favored at 8/25, the value lies in backing her for a straight-sets win. Kostyuk’s 49/20 underdog status reflects the uphill battle she will face.

Here are the betting odds according to BetMGM:

Elena Rybakina: 8/25

Marta Kostyuk: 49/20

Here are the odds for total games as well as total sets for both players (sourced via BetMGM):

Total Games Under 21.5: 22/25

Total Games Over 21.5: 9/10

Rybakina to win: Set 1 – 2/5

Kostyuk to win: Set 1 – 19/10

(According to BetMGM: BetMGM offers exclusive promo codes, bonus deals and accurate odds for users upon signing up. Use BetMGM to ace your betting game in all sports!)

Mandatory Image Credit: David Kirouac-Imagn Images

Elena Rybakina

Marta Kostyuk

National Bank Open 2025

Rudra Dubey

nfl

mma

I’m an academic turned sports writer from Raipur, India, specializing in the NFL, MMA, and tennis at The Playoffs. I previously wrote for Sportskeeda and hold a B.A. and M.A. in History. My journey into sports media began far from the field, rooted in the arts and sciences. Funny enough, I didn’t grow up a sports fan; I used to see it all as just noise. But a fateful writing job introduced me to the world of sports, and what began as a gig quickly became a passion. I understood those voices aren’t noise; they’re emotions of true sports fans, and now I am one of them, writing with the same energy I once questioned.