On Tuesday, Marta Kostyuk (No. 20 in the world) takes on Elise Mertens (No. 35) in the Round of 64 of the Western & Southern Open. Against the underdog Mertens (+135), Kostyuk is the favorite (-175) to advance.

Mertens most recently competed on August 9, 2024 at the WTA Toronto, Canada Women Singles 2024, where she fell to Liudmila Samsonova (2-6, 4-6) in the Round of 16.

Kostyuk heads into this match after a two-set loss to Emma Navarro (5-7, 5-7) in her last match on August 9, 2024 in the Round of 16 at the WTA Toronto, Canada Women Singles 2024.

Tennis odds courtesy of BetMGM Sportsbook. Odds updated Monday at 11:45 PM ET. For a full list of sports betting odds, access USA TODAY Sports Betting Scores Odds Hub.

Mertens vs. Kostyuk match information

• Tournament: The Western & Southern Open
• Round: Round of 64
• Date: Tuesday, August 13
• TV Channel: Tennis Channel
• Venue: Lindner Family Tennis Center
• Location: Cincinnati, Ohio
• Court Surface: Hard

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Match odds

Mertens stats

• Through 55 matches over the past year (across all court types), Mertens has played 19.8 games per match and won 51.8% of them.
• Mertens has played 37 matches on hard courts over the past 12 months, and 20.6 games per match.
• Over the past 12 months, Mertens has won 37.8% of her return games and 66.2% of her service games.
• Mertens has won 39.6% of her return games on hard courts over the past year, and 66.1% of her service games.
• Mertens has won 66.7% of her service games over her last 10 tournaments, and 33% of her return games.
• Mertens is 96th in break points won on all surfaces over the past year, converting 204 of 456 (44.7%).
• Mertens has converted 57 of 126 break points (45.2%) over her last 10 tournaments.

Kostyuk stats

• Kostyuk has averaged 22.8 games per match in her 53 matches played in the past 12 months across all court types, while winning 51.3% of the games.
• Through 35 matches on hard courts in the past year, Kostyuk has averaged 21.7 games per match and 9.4 games per set, winning 52.2% of those games.
• Kostyuk has a 63.8% service game winning percentage and a 39.8% return game winning percentage on all surfaces in the past 12 months.
• When playing on hard surfaces, Kostyuk has a 67.2% winning percentage in service games and a 39.2% winning percentage in return games.
• In terms of serve/return winning percentages over her last 10 tournaments, Kostyuk has won 60.6% of her games on serve, and 42.9% on return.
• Kostyuk is 82nd in break point win percentage in the past 12 months, at 46.3% after going 238-for-514.
• Including all surfaces, Kostyuk has converted 119 of 271 break points (43.9%) over her last 10 tournaments.

Head-to-head matchups

• In the one match between Mertens and Kostyuk in the last two years, in the Australian Open Round of 64, Kostyuk won 5-7, 6-1, 7-6.
• Kostyuk has won two sets against Mertens (66.7%) compared to Mertens with one.
• In 32 total games played between Kostyuk and Mertens, Kostyuk is on top, taking 18 of them.
• In one head-to-head meeting, Mertens and Kostyuk have played 32 games and three sets per match.