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Sabalenka Leads a Wide-Open US Open Women's Field

With no contender above a quarter chance, the tournament is anyone's to claim — and Alcaraz's participation is suddenly the men's side's live question.

Source: Kalshi market “US Open Women's Singles Winner”

Aryna Sabalenka: unlikely (23%)
Resolved The money put Aryna Sabalenka at 28% when this article was published. This market has since closed. See the track record →
Leading outcome at publication Aryna Sabalenka 23% Unlikely · Stable · C · tracked 32 days peak 30% · low 21%
24h move at publication ▲ 1.0 pts Aryna Sabalenka
Traded 24h at publication $59K $900K all time
Resolves by 2026-09-27
Source markets 15 15 markets · mixed

At publication: 23% → Now: 25% (live) — the article below reflects the market as of 2026-08-26 10:25 UTC.

The 2026 US Open is shaping up as one of the most genuinely contested Grand Slams in recent memory. Aryna Sabalenka enters as the women's favorite, but at roughly one-in-four odds she is a leader by a slim margin over a field that includes Iga Swiatek, Coco Gauff, and a cluster of credible contenders — any of whom, on a given fortnight, could lift the trophy at Flushing Meadows.

The money's clearest message on the women's side is not who wins but how uncertain the outcome is. Sabalenka's advantage over Swiatek and Gauff is measured in single digits, and the collective weight of everyone not named Sabalenka dwarfs her share. That kind of distribution — no dominant probability mass anywhere near the top — signals a field the market genuinely cannot separate. This is not false modesty about a hidden favorite; it reflects a draw that spreads talent across the bracket without a clear generational edge belonging to any one player right now.

One notable wrinkle sits in a cross-venue disagreement around an individual contender, Rafael Jodar, where the shallower market prices the prospect at 16% against 6% on the far deeper, higher-volume venue. The deeper market's read deserves more weight, and it counsels skepticism about outsider bets that look tempting on thinner platforms. Why the two venues land so differently is unknowable from the pricing alone — but the gap is a reminder that in qualification-phase markets, not all liquidity is created equal.

The men's cluster carries a sharper and more urgent signal. Carlos Alcaraz's participation itself has slipped to around 89% — a number that would read as routine comfort in most circumstances but registers as a live concern when it moves eight points in a single session on substantial volume. His outright odds are split between two similar contracts in the high-twenties to thirty percent range, and his path to the final sits near a coin flip. Taken together, the cluster suggests the men's draw is being repriced not around who beats Alcaraz in a deep run, but around whether he arrives healthy enough to make that question relevant.

For tennis bettors and followers alike, the practical implication is that both draws are genuinely open. On the women's side, the spread of probability across Sabalenka, Swiatek, Gauff, Naomi Osaka, and others means that backing the field against any single name carries real logic — not just as a hedge but as a positive view. On the men's side, the Alcaraz participation market is the one to watch first; if that resolves cleanly in his favor, the bracket repricing that follows will tell the fuller story of who the money thinks can beat him.

What would break the current consensus? A confirmed Alcaraz withdrawal would detonate the men's market and likely reprice several rivals sharply upward. On the women's side, an early upset of Sabalenka or a dominant grass-to-hard-court run by Swiatek in the weeks ahead would be the most plausible catalyst for a meaningful shift. Until then, the signal is clear: this US Open belongs to no one yet.

Where the money stood at publication

Aryna Sabalenka 23% ▲ 1.0
Iga Swiatek 16% ▲ 1.0
Coco Gauff 15% 0.0
Naomi Osaka 9% ▲ 1.0
Mirra Andreeva 7% ▲ 1.0
Jessica Pegula 7% ▲ 1.0

Source markets for this story (as of publication)

US Open Men's Singles Winner Kalshi · Carlos Alcaraz 28% · -3.0 24h
2026 Men’s US Open Winner (Tennis) Polymarket · Carlos Alcaraz 30% · +1.0 24h
2026 Women’s US Open Winner (Tennis) Polymarket · Aryna Sabalenka 22%
US Open Women's Singles Winner Kalshi · Aryna Sabalenka 23% · +1.0 24h
US Open, Qualification ATP: Vilius Gaubas vs Marco Cecchinato Polymarket · US Open, Qualification ATP: Vilius Gaubas vs Marco Cecchinato 66% · -8.0 24h
Carlos Alcaraz to play in the US Open Kalshi · Yes 89% · -8.0 24h
US Open, Qualification WTA: Moyuka Uchijima vs Lucie Havlickova Polymarket · US Open, Qualification WTA: Moyuka Uchijima vs Lucie Havlickova 68%
US Open 2026: To Reach the Final (Men's Singles) Polymarket · Carlos Alcaraz 44%
US Open, Qualification ATP: Daniel Rincon vs Jordan Lee Polymarket · US Open, Qualification ATP: Daniel Rincon vs Jordan Lee 66% · -1.0 24h
US Open, Qualification WTA: Tamara Zidansek vs Guiomar Maristany Polymarket · US Open, Qualification WTA: Tamara Zidansek vs Guiomar Maristany Set 1 O/U 8.5 66%
US Open, Qualification ATP: Francesco Passaro vs Tom Gentzsch Polymarket · US Open, Qualification ATP: Francesco Passaro vs Tom Gentzsch Set 1 O/U 8.5 80% · +30.0 24h
US Open, Qualification WTA: Despina Papamichail vs Ekaterine Gorgodze Polymarket · US Open, Qualification WTA: Despina Papamichail vs Ekaterine Gorgodze Set 1 O/U 8.5 57% · +22.5 24h
US Open, Qualification ATP: Luka Mikrut vs Nishesh Basavareddy Polymarket · US Open, Qualification ATP: Luka Mikrut vs Nishesh Basavareddy Match O/U 23.5 64%
US Open, Qualification WTA: Elena Pridankina vs Rebecca Marino Polymarket · US Open, Qualification WTA: Elena Pridankina vs Rebecca Marino Set 1 O/U 8.5 70% · +21.0 24h
Will Carlos Alcaraz Play in the U.S. Open? Polymarket · Yes 96% · -1.9 24h
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