Tennis Betting Tips: Today’s US Open predictions, preview and best bets for Day Two on Monday August 25

The second day of the US Open promises a compelling line-up, with several big names set to make their first appearance at Flushing Meadows. After a lively opening day that witnessed both established stars and young contenders asserting their authority, attention now turns to those hoping to stamp their mark on this year’s tournament. Read on to find the best tips and predictions in addition to the latest betting offers.

Tennis betting tips: US Open Day 2 Predictions for Monday August 25

Can Opelka’s Serve Trouble Alcaraz in New York?

• Opelka has held serve in 91% of hard-court games this season but breaks in only 9% of return games.
• Alcaraz has suffered just one defeat since May, winning 16 of 20 matches on hard courts.
• In his last 10 matches, Alcaraz has conceded at least one set in five of them.

Our Tips

The men’s draw sees the return of one of the favourites for the title, Carlos Alcaraz, who is tasked with navigating a potentially tricky opening assignment against the towering American Reilly Opelka. Their clash stands out not just for the contrast in styles, but also because it will be the first time the pair have met on tour.

Elsewhere in the men’s singles, Ugo Humbert will attempt to overcome his struggles at this event when he meets the Australian Adam Walton. Humbert, who has failed to build a strong record in New York despite his pedigree, faces an opponent who comes in buoyed by some impressive recent scalps. Also taking to court is Botic van de Zandschulp, who will be eager to replicate his memorable performances in New York when he meets Holger Rune, while Croatian youngster Dino Prizmic continues his rise against Andrey Rublev. On the women’s side, the teenager Mirra Andreeva aims to prove she can translate her talent into a deeper run, beginning with a test against Alycia Parks.

It is a schedule brimming with intrigue, featuring contests between promising challengers and established contenders, but it is Alcaraz against Opelka that captures most of the spotlight. One man is desperate to show he can still trouble the very best, while the other begins his mission to reclaim the trophy he lifted two years ago.

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Best Bet for the Day

Here at bettingtips4you, we take pride in presenting one carefully chosen prediction rather than offering numerous options. Our philosophy is rooted in quality over quantity, ensuring readers are guided towards a single, confident selection. This approach makes it easier to follow and allows for accountability, as our record of profitability can be tracked clearly without confusion. For today’s standout clash, our Best Bet is: Reilly Opelka v Carlos Alcaraz – Alcaraz to win 3-1 at 5/2.

Alcaraz is widely tipped to progress deep into the tournament, yet his tendency to concede sets early on in Grand Slam matches cannot be ignored. Despite his dominance in 2025, where he has amassed an extraordinary 54 wins from 60 matches and collected six titles, he has still dropped a set in half of his last ten contests. That suggests opportunities exist for opponents with the weapons to take advantage, and Opelka is well equipped to do just that with his monumental serve.

The American’s 6ft 11in frame makes his delivery one of the hardest to neutralise on the tour, and his recent form demonstrates he can still unsettle elite players. Wins over Alex de Minaur and a set taken from Daniil Medvedev illustrate his ability to compete on hard courts. Opelka’s season record of 28 victories is evidence that he remains competitive, and on home soil he will be motivated to make this a battle.

Nevertheless, Alcaraz’s all-court game and relentless baseline intensity are likely to wear down the American across four sets. Opelka rarely threatens on return, having won just 9% of return games on hard courts this year, and over the course of a long match, that weakness will prove decisive. A four-set win for Alcaraz at 5/2 provides a balanced way to back the Spaniard while acknowledging the challenge Opelka’s serve poses in the early stages.

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