Jiri Lehecka vs. Adolfo Daniel Vallejo prediction, odds, picks for ATP Japan Open 2026

Using innovative machine learning and data analysis, we have re-simulated the outcome of Sunday's Lehecka-Vallejo men's singles match, forming part of our tennis predictions coverage.

Our leading predictive model gives Lehecka a 72% chance of winning against Vallejo at the ATP Japan Open tournament. Additionally, Lehecka has a 69% chance of winning the first set. The simulations also show Lehecka (-3.5) has a 53% chance of covering the games spread, while the under 22.5 games has a 54% chance of hitting, according to our model.

Latest betting odds

We have researched the most up-to-date betting odds in America for this match, which are listed here:

• Moneyline: Adolfo Vallejo +235, Jiri Lehecka -277
• First Set: Lehecka -227, Vallejo +175

All odds are correct at the time of publication and are subject to change.

Model picks and best bet

After matching our probabilities against the best available odds, we can reveal our picks for each of the major markets in this matchup. Plus, find our best bet for the game below:

• Moneyline: Lehecka @ -277 via DraftKings
• First Set: Vallejo @ -125 via DraftKings

According to our tennis best bets, the top play to make on this match is over 22.5 total games.

These picks are based on our probabilities matched against the implied probabilities from the current available odds.

Game info & first serve details

The ATP Japan Open match between Jiri Lehecka and Adolfo Daniel Vallejo is scheduled to begin on Sunday at 4:10 AM ET.

• Who: Jiri Lehecka vs. Adolfo Daniel Vallejo
• Date: Sunday, October 4, 2026
• Approx. Time: 4:10 AM ET/1:10AM PT
• Tournament: ATP Tokyo, Japan Men's Singles 2026
• Round: Quarterfinals

All dates and times in this article are United States Eastern Time unless otherwise stated.

Conclusion

We predict Jiri Lehecka, with a 72% win probability, will likely beat Adolfo Vallejo at the ATP Japan Open tournament.

Additional tools and information for betting safely can be found in our Responsible Gambling hub.

This article's predictions and probabilities are generated by Dimers' proprietary Tennis prediction model. Our editorial team reviews the resulting content for accuracy and presentation before publication.