Báez Arrives At The US Open With One Huge Unknown
Brandon Nakashima is -625 at Bookmaker Sportsbook, Sebastián Báez +432. Nakashima is -6.5 games at -115, with the total set at 35.
The pick is Nakashima -6.5 at -115.
Four days before facing Nakashima at the US Open, Báez stopped playing. He retired from his Winston-Salem match against Juan Manuel Cerúndolo while trailing 6-2, 4-0. Contemporary reporting described Báez as physically limited before he ended the match.
That makes Monday’s central question considerably more interesting than whether a clay-court specialist can survive an American hard court. What does Báez have underneath him when Nakashima starts taking time away?
What Exactly Recovered Since Wednesday?
Báez’s hard-court improvement this season is real. He reached 12-5 on the surface during Cincinnati after going just 3-12 last year, with 2026 wins over Taylor Fritz, Ben Shelton and Grigor Dimitrov.
He also arrived at Winston-Salem after a busy North American stretch and beat Hugo Grenier 7-5, 7-6 before the Cerúndolo match ended prematurely.
No verified public explanation has established the nature or severity of the physical problem, so anything more specific would be guesswork.
What is known is more useful for Monday: Báez couldn’t complete his final US Open tune-up and now enters a best-of-five match four days later. Nakashima is not arriving with the kind of game that promises much recovery time between exchanges.

Ferreira Wants the First Ball Earlier
Nakashima explained the change himself in New York on Friday. Since Wayne Ferreira joined his team, the emphasis has been on playing more aggressively, coming forward more often and hitting the forehand with greater pace.
The partnership has produced a 16-5 record and six wins in eight matches against Top 20 opponents. More importantly for this matchup, it has changed where Nakashima tries to finish points.
Against Daniil Medvedev in Cincinnati, two of the three match points Nakashima saved ended with him moving forward: one behind a forehand approach, another with serve-and-volley.
Báez therefore enters Monday facing considerably more than Nakashima’s familiar first serve and baseline consistency. The version waiting in New York is actively shortening the distance between first strike and finish.
How Long Can Báez Make This?
The five-set format changes the significance of Wednesday’s retirement. Báez has already demonstrated this year that he can beat elite players on hard courts. The question is whether his body can still sustain the movement and resistance that made those victories possible.
Nakashima practiced at Flushing Meadows on Thursday and told reporters Friday that his recent run had brought new confidence. He enters as the No. 16 seed after reaching at least the semifinals in Washington, Montreal and Cincinnati.
The Tennis Betting Hub and ATP Betting Guide provide the wider tournament picture. This price depends on something immediate.

Where Does -6.5 Break?
At -625, Nakashima’s moneyline offers little. The -6.5-game spread at -115 makes the physical uncertainty actionable.
A competitive Báez can still produce difficult service games and long exchanges. But Nakashima’s increased aggression creates repeated opportunities for separation if Báez’s movement deteriorates over three, four, or five sets.
Prediction: Brandon Nakashima in straight sets.
Betting lean: Nakashima -6.5 at -115.
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Data Snapshot
| Category | Sebastián Báez | Brandon Nakashima |
|---|---|---|
| ATP Ranking | No. 50 | No. 17 |
| US Open Seed | Unseeded | No. 16 |
| Age | 25 | 25 |
| Height | 5’7″ | 6’2″ |
| Plays | Right-handed | Right-handed |
| 2026 Hard-Court Record* | 12-6 | 22+ wins |
| Final US Open Tune-Up | Retired vs Cerúndolo | Cincinnati semifinal |
| Days Since Last Match | 5 | 8 |
| Last Completed Match | Beat Grenier 7-5, 7-6 | Lost to Tiafoe 7-5, 6-3 |
| Physical Status | Retired Aug. 26; cause unconfirmed | No reported current issue |
| Head-to-Head | 0-1 | 1-0 |
| Best US Open Result | R3 | R4 |
| Current Coach | Sebastián Gutiérrez | Wayne Ferreira |
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