Lulu Sun and Camila Osorio are set to clash in the first round of the US Open 2025 on Sunday, in a matchup that promises a tight contest on the hard courts of Flushing Meadows.
A predictive model evaluated the Sunday encounter by running 10,000 simulations. The results tilt slightly in Sun’s favor: Sun has a 54% chance to win the match, while Osorio is pegged at 46%. The same model also projects Sun to win the first set with about a 53% probability. It also notes that Osorio covering the games spread at +2.5 has roughly a 53% chance, and the under 22.5 total games has about a 54% probability of hitting.
Current betting markets show Sun as the slight favorite on the moneyline, with a line around -150, and Osorio at +126. For the first set, Sun is backed at roughly -139 with Osorio at +110. The total games market is listed with over 22.5 at around -105 and under 22.5 at around -120, while the game spread options show Sun at +2.5 and Osorio at -2.5 with corresponding odds.
What this means for viewers and bettors: the biggest edge from the model is on Sun to win the match, underscoring Sun as the narrow favorite in a potentially balanced battle. The numbers also point to a plausible first-set contest, and a close total of games is likely given the 54%/46% split.
Match context and timing: the US Open Women’s Singles first round between Sun and Osorio is scheduled for Sunday, August 24, 2025, with a start time around 4:20 PM ET.
Responsible gambling note: as always, gamble responsibly. If you choose to engage with betting markets, do so with awareness of the inherent risks and consider supporting resources for responsible play.
Summary
Lulu Sun is the slight betting favorite and holds a 54% projected chance to win the match against Camila Osorio, who is pegged at 46%. The matchup could feature a competitive opening set and a tight overall game total, making for an intriguing Sunday show at the US Open.