Jannik Sinner withdraws from the US Open with a right knee injury, and Thursday's draw finished the reset. Carlos Alcaraz still fronts the US Open odds 2026 market, but his contract has shed roughly seven points since the weekend. Alexander Zverev inherited the No. 1 seed and the kinder half of the bracket, and he has closed to within five points. Traders on Kalshi and Polymarket have already repriced the fortnight.
The US Open main draw starts Sunday, August 30 at the USTA Billie Jean King National Tennis Center. The bracket is set, so the US Open odds 2026 board you read today is the one that carries into the first ball.
Kalshi US Open Odds 2026
| Player | Win % |
|---|---|
| Carlos Alcaraz | 28% |
| Alexander Zverev | 23% |
| Novak Djokovic | 11% |
| Ben Shelton | 7% |
| Arthur Fils | 7% |
Alcaraz traded as high as 35 percent last Saturday. The draw took nine points off him inside a day before he stabilized in the high 20s. Zverev has moved the opposite direction, up from single digits when traders still expected Sinner to play.
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Polymarket US Open Odds 2026
| Player | Win % |
|---|---|
| Carlos Alcaraz | 28% |
| Alexander Zverev | 24% |
| Novak Djokovic | 11% |
| Taylor Fritz | 7% |
| Arthur Fils | 7% |
Note the fifth name. Kalshi's board carries Ben Shelton in that slot, Polymarket carries Taylor Fritz. Fritz landed in a soft section and roughly doubled off the draw, while Shelton drifted after being dropped into Alcaraz's quarter with a possible fourth-round meeting against Fils.
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Who Will Win the US Open 2026?
Carlos Alcaraz odds: 28%. The defending champion returns from a four-month wrist injury and skips every hard-court warm-up event. He did get on court this week, playing mixed doubles alongside Serena Williams before the pair went out early. That answered one question and not the bigger one: the wrist holds up in short sets, and best-of-five is still untested. He owns the title and the head-to-head record over most of this field. The draw is the problem. Seeded No. 2 and stranded at the bottom of the sheet, he opens against Roman Safiullin, with Alexander Bublik projected in the fourth round and both Arthur Fils and Ben Shelton parked in his quarter. Novak Djokovic waits in the same half. That is why Carlos Alcaraz odds sit at 28 percent rather than the 35 they touched last weekend.
Zverev US Open odds: 23 to 24%. With Jannik Sinner off the board, the French Open champion inherits the clearest runway of anyone in the top five. The bracket confirmed it. He is the only Grand Slam winner in his half. He opens against Lorenzo Sonego with Alex de Minaur projected in the quarterfinals and Rafael Jodar the other live name in that section. A first-round exit in Toronto and a squandered match point in the Cincinnati fourth round cool the form line, but he chases a second major, and the market respects the floor he brings to every hard-court event. Zverev US Open odds now trail Alcaraz by four to five points, down from double digits before the bracket landed.
Novak Djokovic: 11%. Four US Open titles and a shot at a record 25th Grand Slam keep him live. He drew one of the friendlier early paths, opening against Mariano Navone with a possible Stan Wawrinka second round and Daniil Medvedev projected in the quarters, though a semifinal against Alcaraz sits at the end of it. Heat-related trouble in Cincinnati is the counterweight. Age argues the other way.
Ben Shelton: 7%. New York lifts him and his serve travels on this surface. He opens against Tallon Griekspoor, but the draw was unkind — Fils looms in the fourth round and Alcaraz beyond that, which is why he has come down from 9 percent.
Arthur Fils: 7%. Traders price him as the breakout name of the fortnight. The Cincinnati champion drew Stefanos Tsitsipas in the first round, the best opening match on the men's sheet, and his number doubled once the bracket landed.
Taylor Fritz: 8% on Polymarket. The best pure draw story of the men's field. He was a 4 percent contract before Thursday and sits at 8 now, entirely on bracket position.
Reading US Open Outright Odds
US Open outright odds on prediction markets read as straight probability. A 28 percent contract costs 28 cents and pays $1. Compare that to sportsbook US Open winner odds, where a +140 price implies roughly 41 percent, and the gap shows up fast.
Two habits pay off here. First, check both boards. Kalshi and Polymarket disagree on a full point of Zverev and on the fifth name in the top five outright — Shelton on one, Fritz on the other. Splits like that hand you the better entry. Second, respect what the draw already did. Alcaraz shed nine points, Fritz and Fils roughly doubled, and Shelton fell two. That repricing is done, which means the remaining edge is in the first week rather than the days before it.
One more note on timing. US Open tennis odds on both exchanges trade live through the fortnight, so a contract you buy today stays tradable after every result. That flexibility separates a prediction market from a locked sportsbook future, and it matters most in a draw this lopsided: a comfortable opening week from Alcaraz pushes his contract back toward the low 30s, and a labored one opens the trapdoor.
Key Dates
- Draw: Completed Thursday, August 27
- First Round: Sunday, August 30
- Men's Final: Sunday, September 13
Get Set Before Sunday
Sinner or Alcaraz has sat out each of the last three majors, so treat this draw as genuinely open rather than a coronation. The bracket did not settle it either. Zverev got the smoother route and the top seed, Alcaraz got the gauntlet and the title, and four points separate them. No man has repeated as US Open champion since Roger Federer's run through 2008.
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