Tennis Betting Tips: Today’s US Open predictions, preview and best bets for Day One on Sunday August 24

The opening day of the US Open always provides plenty of intrigue, with the world’s best converging on Flushing Meadows for the final major of the year. Novak Djokovic’s pursuit of a 25th Slam singles title headlines proceedings, though question marks surround his physical readiness. Having not played a competitive match since Wimbledon, the Serbian superstar admits to prioritising Grand Slams but long gaps between events have left him rusty in recent months. Read on to find the best tips and predictions in addition to the latest betting offers.

Tennis betting tips: US Open Day 1 Predictions for Sunday August 24

Could Day One in New York Deliver a Five-Set Thriller?

• Mannarino has won 16 of his last 21 matches across all levels, including five victories in Cincinnati alone
• Griekspoor has lost five of his last six matches since winning the title in Mallorca
• Mannarino has taken seven wins in his last ten matches, with six of those victories coming in straight sets

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He has still managed to make three semi-finals in 2025, though in each he has either struggled with injury or appeared short of rhythm. Facing him is the rising American Learner Tien, who has enjoyed an excellent season and already beaten Daniil Medvedev, Alex Zverev and Andrey Rublev on hard courts. Tien’s return game in particular has impressed, and with Djokovic prone to dropping sets early in majors this year, this contest could be more competitive than the odds suggest.

Elsewhere, the women’s draw will see Aryna Sabalenka begin her campaign. The world number one has been consistent in reaching the latter stages but has endured heartbreak in Slam finals. Sabalenka is joined on court by big home hopes Ben Shelton and Taylor Fritz, while Emma Raducanu, who stunned the world with her 2021 triumph here, will also take to the stage.

Among the most fascinating clashes away from the main spotlight is Adrian Mannarino against Tallon Griekspoor. The French veteran arrives in New York enjoying a surge in form, stringing together wins against notable opponents in Cincinnati before pushing world number one Jannik Sinner close.

In contrast, Griekspoor has endured a torrid hardcourt summer, losing repeatedly since Wimbledon and looking short of confidence. On paper, the Dutchman carries greater power and is ranked much higher, yet recent results and Mannarino’s comfort on quick surfaces suggest a potential upset is on the cards. With both men known for fluctuating performances, this could easily stretch to five sets, adding another layer of drama to an already packed opening day.

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Best Bet for the Day

At BettingTips4You, we believe in quality over quantity, meaning we focus on a single carefully chosen selection for each event. This ensures that readers are presented with one clear recommendation rather than multiple conflicting options, making it easier to follow and more accountable in tracking performance over time. For today’s action, the standout play is Adrian Mannarino to win 3-2 vs Tallon Griekspoor.

The reasoning is grounded in both form and stylistic dynamics. Mannarino has been rejuvenated in recent weeks, securing five wins in Cincinnati alone and testing Sinner in a match where he fell in straight sets but only by fine margins. His success against players such as Tommy Paul and Tomas Machac highlighted how comfortable he is on quicker courts, with his flat strokes and forward movement perfectly suited to the pace of hard surfaces. Entering New York with seven victories in his last ten matches, he looks well equipped to extend that momentum.

Griekspoor, by contrast, has endured a difficult stretch. Since triumphing on grass in Mallorca, he has struggled to translate his power game onto hard courts, losing five of his last six contests, including disappointing defeats in Toronto and Cincinnati. His only recent win came against Andrea Pellegrino, a much lower-ranked opponent. Although his serve can produce cheap points, his inability to sustain pressure through rallies has left him vulnerable.

The likely scenario is that both players will have periods of dominance. Mannarino’s experience and touch should allow him to neutralise Griekspoor’s heavier hitting, but the Dutchman’s ability to reel off service holds means he is unlikely to go quietly. Given the contrast in form yet the closeness in playing styles, the most realistic path is a long battle that swings back and forth before Mannarino’s composure and current confidence carry him through in five sets. At 3-2, the price reflects both his edge in form and the expectation of a gruelling duel.

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