Sep 1, 2024; Flushing, NY, USA; Coco Gauff (USA) hits to Emma Navarro (USA) on day seven of the 2024 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center.

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Coco Gauff vs. Ajla Tomljanovic Head-to-Head, Prediction and Betting Odds for US Open 2025 Round-1

Winner to face Vekic or Bouzas Maneiro in Round-2.

Sep 1, 2024; Flushing, NY, USA; Coco Gauff (USA) hits to Emma Navarro (USA) on day seven of the 2024 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center.

World No. 3 Coco Gauff has a point to prove at this year’s US Open 2025. Despite being a former champion, the American superstar has been written off due to her recent struggles on serve. She will look to silence her critics this fortnight, starting with a challenging Round-1 battle against Ajla Tomljanovic of Australia. Follow The Playoffs News for your daily dose of updates at Flushing Meadows, and keep up with BetMGM to ace your betting game.

Coco Gauff vs Ajla Tomljanovic Match Preview

With the possibility of attaining the World No. 1 ranking after the US Open, Coco Gauff will certainly compete with newfound energy and resilience. After all, it is one of her favourite events on the tennis calendar. The 21-year-old American began her season with a QF finish at the Australian Open, after which she had a timid run during the Middle Eastern and Sunshine Double swings. Just when people began counting her out, Gauff reached back-to-back clay court finals and then won Roland Garros. Since then, it has been a bit of a downward spiral for the two-time Grand Slam champion. Could another big result be loading for her?

COCO GAUFF ROLAND-GARROS CHAMPION 🏆#RolandGarros pic.twitter.com/duOMXfxaAP
— Roland-Garros (@rolandgarros) June 7, 2025

Coming to her opponent, Ajla Tomljanovic’s only noteworthy performances this year have come at the ATX Open in Austin and the Morocco Open – she reached the semifinal stage in both events. A former Top-35 player and Grand Slam quarterfinalist, Tomljanovic has struggled with injuries over the years. In hard court tournaments across 2025, the 32-year-old Australian has a success rate of just under 50% and no titles to show for it. Currently ranked No. 79 in the world ahead of the US Open, Tomljanovic has a mediocre 64% win percentage in service games.

Ajla knows what it is like to defeat a big-name American in enemy territory 💪

16 Aussies are set to compete in the opening round of the @usopen #GoAussies https://t.co/Zgb2waNxQE
— TennisAustralia (@TennisAustralia) August 24, 2025

Coco Gauff vs Ajla Tomljanovic Head to Head Record

Gauff leads the head-to-head against Tomljanovic by 1-0 at present. They faced one another at the 2024 Paris Olympics, where the American ran riot. Squaring off in the Round of 64, No. 2 seed Gauff produced a ruthless display of top-spin attacks to leave Tomljanovic hunting for answers. She followed a convincing opening set performance with a bagel in the second set.

Event	Round	Winner	Score
2024 Paris Olympics	Round of 64	Coco Gauff	6-3 6-0

Coco Gauff vs Ajla Tomljanovic Career Comparison

Coco Gauff	Category	Ajla Tomljanovic
3	Current Ranking	79
264-111	Career W-L Record	422-320
35-12	YTD W-L Record	20-19
10	Career Titles	0
1	YTD Titles	0
2	Grand Slams	0

Coco Gauff vs Ajla Tomljanovic US Open 2025 Prediction

Despite Tomljanovic being someone who likes playing on hard courts, Gauff is a counter-punch specialist. She has the ability to play her best tennis on return games, and her conversion rate is very high (57%). The American will use acute angles to draw short balls from her Australian counterpart. For Tomljanovic, remaining strong on serve and hitting fearlessly through the line could give her some success. However, if she fails to come forward and be willing to take risks at the net, Gauff’s defensive prowess will carry her through.

Prediction: Coco Gauff in straight sets.

Coco Gauff vs Ajla Tomljanovic US Open 2025 Betting Odds

Gauff is an outright favourite to overhaul the underdog Tomljanovic in straight sets. According to the implied probability on the money line, Gauff has a 96% chance of advancing to the Round of 64. Given below are the pre-match betting odds for the match result, as well as the odds for in-match events (as per BetMGM):

Coco Gauff Win: 1/18
Ajla Tomljanovic Win: 9/1

Total Games <17.5: 10/11
Total Sets <2.5: 1/5
Tomljanovic +6.5 (Game Handicap): 11/10
Gauff -6.5 (Game Handicap): 7/10
Gauff to Win 2-0: 6/25
Gauff to Win Set-1 By 6-1 or 6-3: 3/1

(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!)

(Image Credits: Robert Deutsch, Imagn Images)

Ajla Tomljanovic

Betting

Coco Gauff

Donna Vekic

Jessica Bouzas Maneiro

Tennis

US Open 2025

WTA

Sankalp Harikrishnan

A passionate sports fan through and through, I am currently pursuing my MA in Global Sports Journalism. I specialise in tennis and football writing at The Playoffs News, and I have prior experience working at EssentiallySports and Sportskeeda. Born and raised in Bengaluru, India, sport was my safe space right from my childhood. After trying my hand at multiple sports and representing my educational institutions in cricket, badminton and table tennis, I found sports media to be my calling.