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Vallejo vs Monfils US Open Matchup
Matchup: (60) Adolfo Vallejo vs (311) Gael Monfils
When: Sep 1 2026, at 7:00 PM
Tournament: US Open
Stage: Round of 128
Venue: USTA Billie Jean King National Tennis Center
Location: New York City, New York
Tennis Match Odds, Spread, Moneyline & Total
Adolfo Daniel Vallejo vs Gael Monfils
Game Spread
Adolfo Daniel Vallejo -1.5 (-120)
Gael Monfils 1.5 (-110)
Adolfo Daniel Vallejo vs Gael Monfils
Moneyline
Adolfo Daniel Vallejo -140
Gael Monfils +115
Adolfo Daniel Vallejo vs Gael Monfils
Total
Over 38.5 (-110)
Under 38.5 (-120)
Go to the Prediction here
(Get real-time live scores & latest betting odds here!)
Vallejo vs Monfils ATP Tennis Preview
Gaël Monfils opens his final US Open campaign against rising Adolfo Daniel Vallejo in a fascinating veteran-versus-youth betting matchup. Monfils turns 40 on match day and still owns the bigger serve and forehand, but stamina is a major concern after failing to win a Grand Slam match in 2026.
Vallejo arrives at a career-high No. 60 and has shown improving hard-court form, including a competitive Cincinnati battle with Tommy Paul. His 25.5% return break rate gives him a real path to pressure Monfils over five sets. With age and endurance looming large, Vallejo offers the more intriguing betting profile.
Vallejo vs Monfils Matchups Props
Adolfo Daniel Vallejo vs Gael Monfils
Game Spread
Adolfo Daniel Vallejo – S1 -1.5 (+105)
Gael Monfils – S1 1.5 (-135)
Adolfo Daniel Vallejo vs Gael Monfils
Moneyline
Adolfo Daniel Vallejo – S1 -130
Gael Monfils – S1 EVEN
Adolfo Daniel Vallejo vs Gael Monfils
Total
Over – S1 8.5 (-335)
Under – S1 8.5 (+240)
Adolfo Daniel Vallejo vs Gael Monfils
Alternate Total Games
Over 37.0 (-135)
Under 37.0 (+105)
Over 37.5 (-130)
Under 37.5 (EVEN)
Over 38.0 (-120)
Under 38.0 (-110)
Over 39.0 (EVEN)
Under 39.0 (-130)
Over 39.5 (-110)
Under 39.5 (-120)
Adolfo Daniel Vallejo vs Gael Monfils
Alternate Total Games
Over – S1 10.5 (+255)
Under – S1 10.5 (-360)
Over – S1 12.5 (+425)
Under – S1 12.5 (-700)
Adolfo Daniel Vallejo vs Gael Monfils
Total Games O/U – Adolfo Daniel Vallejo
Over 20.0 (-110)
Under 20.0 (-120)
Adolfo Daniel Vallejo vs Gael Monfils
Total Games O/U – Gael Monfils
Over 19.5 (-110)
Under 19.5 (-120)
Adolfo Daniel Vallejo vs Gael Monfils
Total Games O/U
Over – S1 9.5 (-130)
Under – S1 9.5 (EVEN)
Adolfo Daniel Vallejo vs Gael Monfils
Alternate Game Spread
Adolfo Daniel Vallejo -0.5 (-135)
Gael Monfils 0.5 (+105)
Adolfo Daniel Vallejo -1.0 (-125)
Gael Monfils 1.0 (-105)
Adolfo Daniel Vallejo -2.0 (-105)
Gael Monfils 2.0 (-125)
Adolfo Daniel Vallejo -2.5 (EVEN)
Gael Monfils 2.5 (-130)
Adolfo Daniel Vallejo vs Gael Monfils
Alternate Game Spread
Adolfo Daniel Vallejo – S1 1.5 (-175)
Gael Monfils – S1 -1.5 (+135)
Adolfo Daniel Vallejo – S1 -3.5 (+475)
Gael Monfils – S1 3.5 (-800)
Adolfo Daniel Vallejo – S1 3.5 (-1100)
Gael Monfils – S1 -3.5 (+600)
Adolfo Daniel Vallejo vs Gael Monfils
Set Betting
Adolfo Daniel Vallejo 3 – 0 +300
Adolfo Daniel Vallejo 3 – 1 +335
Adolfo Daniel Vallejo 3 – 2 +460
Gael Monfils 3 – 0 +430
Gael Monfils 3 – 1 +415
Gael Monfils 3 – 2 +475
Adolfo Daniel Vallejo vs Gael Monfils
Set Spread
Adolfo Daniel Vallejo -1.5 (+130)
Gael Monfils 1.5 (-170)
Adolfo Daniel Vallejo vs Gael Monfils
Alternate Set Spread
Adolfo Daniel Vallejo 1.5 (-260)
Gael Monfils -1.5 (+190)
Adolfo Daniel Vallejo -2.5 (+325)
Gael Monfils 2.5 (-500)
Adolfo Daniel Vallejo 2.5 (-750)
Gael Monfils -2.5 (+450)
Adolfo Daniel Vallejo vs Gael Monfils
Total Sets
Over 3.5 (-220)
Under 3.5 (+165)
Adolfo Daniel Vallejo vs Gael Monfils
Alternate Total Sets
Over 4.5 (+210)
Under 4.5 (-285)
Adolfo Daniel Vallejo vs Gael Monfils
Set Correct Score
Adolfo Daniel Vallejo – 6 – 0 – S1 +5000
Adolfo Daniel Vallejo – 6 – 1 – S1 +1600
Adolfo Daniel Vallejo – 6 – 2 – S1 +900
Adolfo Daniel Vallejo – 6 – 3 – S1 +550
Adolfo Daniel Vallejo – 6 – 4 – S1 +525
Adolfo Daniel Vallejo – 7 – 5 – S1 +1400
Adolfo Daniel Vallejo – 7 – 6 – S1 +775
Gael Monfils – 6 – 0 – S1 +6600
Gael Monfils – 6 – 1 – S1 +1900
Gael Monfils – 6 – 2 – S1 +1100
Gael Monfils – 6 – 3 – S1 +650
Gael Monfils – 6 – 4 – S1 +575
Gael Monfils – 7 – 5 – S1 +1500
Gael Monfils – 7 – 6 – S1 +825
Adolfo Daniel Vallejo vs Gael Monfils
Tiebreak In Set
Yes – S1 +375
No – S1 -600
Adolfo Daniel Vallejo vs Gael Monfils
Will there be a tie-break in the match?
Yes EVEN
No -130
Adolfo Daniel Vallejo vs Gael Monfils
Odd/Even Total Games
Even -110
Odd -110
Adolfo Daniel Vallejo vs Gael Monfils
Will Adolfo Daniel Vallejo Win At Least One Set?
Yes -800
No +475
Adolfo Daniel Vallejo vs Gael Monfils
Will Gael Monfils Win At Least One Set?
Yes -500
No +325
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US Open ATP Tennis Predictions
Tennis Pick: Alternate Total Games –
Over 39.0 (EVEN)
A $100 Bet on that Props will return $200
Tennis Odds & Props source: Bovada Sportsbook
