US Open Tennis Predictions: Saturday best bets featuring Jannik Sinner on Day 7

The 2025 US Open continues in New York City on Saturday, August 30 for Day 7 at Flushing Meadows. The fourth and final Grand Slam of the year runs through to Championship Sunday on September 7 and begins its third round of play on Saturday. As the tournament advances, we have the latest US Open best bets and tennis predictions.

The Dimers model has gotten off to a hot start, including a 2-0 day on our best High Value bets from Day 3 of the US Open, nailing Jannik Sinner as our top bet on Day 5 and another 2-0 result on Day 6 with bets on Carlos Alcaraz and Novak Djokovic.

As the third round wraps up on Saturday, some of the best will compete today, such as Jannik Sinner and Aexander Zverev for the men, and Naomi Osaka and Coco Gauff on the women's side.

Add in Dimers’ biggest betting offering ever—expanded markets, new bet types, and broader sportsbook coverage—and there’s never been a better time to bet on the US Open.

Best Value Bets for Day 7 of the US Open - Saturday, August 30

Dimers highlights “High Value” bets when favorable odds line up with strong probability.

Two wagers stand out on on Saturday as bets with both High Value and over a 60.0% probability: 

 Andrey Rublev -6.5 Games vs. Coleman Wong

• Court: Grandstand
• Time: 12:10 PM ET
• Win Probability: 66.9%
• Edge: 11.3%
• Best Odds: -125 (Caesars Sportsbook)

This bet stands out as not only a highly favorable bet due based on the high probability, but is also backed by a very high double-digit edge, which proved to be profitable in Friday's matches.

See our full match predictions for Rublev vs. Wong on Saturday, including Moneyline and Game Totals.

Jannik Sinner -8.5 Games vs. Denis Shapovalov

• Court: Arthur Ashe Stadium
• Time: 12:40 PM ET
• Win Probability: 64.1%
• Edge: 11.7%
• Best Odds: –110 (Caesars Sportsbook)

Another standout bet with a strong probability and favorable edge, the highest of the entire day, according to the Dimers tennis model. To see more bets from this match, view our full match predictions for Sinner vs. Shapovalov.

To find more value bets, including some moneyline upsets and more, check out Dimers' Best Tennis Bets every day of the US Open.

Betting the US Open Smartly

The opening round is all about balance—taking advantage of sharp value edges while recognizing the volatility of early rounds. Heavy favorites like Jannik Sinner and Coco Gauff look like strong bets to advance, while Dimers’ Day 7 “High Value” picks provide bettors with calculated opportunities. Keep an eye on tight matches like Tommy Paul vs. Alexander Bublik, where the win margin is razor thin.

With Flushing Meadows buzzing, the 2025 US Open is primed for drama, and Dimers is giving bettors every tool they need to play it smart.

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