KalshiCheck availabilityKYC required2% feeVerified resolution dataRoughly calibratedCurrent implied probabilityJannik Sinner 55%+4.0ptLeader of 33 outcomes
Market quality
74 / 100
Medium quality24h Volume
$43.5K
Liquidity
$529.4K
High liquidityBid / Ask
54.0% / 55.0%
Spread
1.0 pt
Tight spreadMarket data
Updated 23 minutes ago
Jun 8, 26, 5:00 PMSep 28, 26, 2:00 AM
Trends
Paper funds only — no real moneyNot financial advice
Selected outcome
Jannik Sinner55%
Compare venues· Jannik Sinner
Ranked by market quality, then liquidity and 24h volume| Venue | Quality | Probability | vs reference | 24h Vol | Liq | Freshness | |
|---|---|---|---|---|---|---|---|
 PolymarketBest overall78% match · linked | High | 53% | — | $73.8K | $1.2M | 3 minutes ago | Open → |
| KalshiThis page | Medium | 55% | — | $43.5K | $529.4K | 23 minutes ago | |
 Limitless78% match · linked | Low | 53% | — | $0 | $0 | 23 minutes ago | Open → |
 Manifold Markets78% match · auto | — | 62% | — | — | — | 23 minutes ago | Open → |
Also available on Polymarket
2026 Men’s US Open Winner (Tennis)
0.1 pts1mo
+0.5pt54.1%
-1.0pt22.4%
7.1%
+46 more outcomes
89 • High qualityTight spreadHigh liquidityHigh ambiguity
Total Vol$4.7M
24h Vol$73.8K
POLYMARKETAlso available on Manifold Markets
2026 US Open - Men’s singles winner?
1mo
+3.0pt62%
-2.3pt20.6%
-0.3pt5.4%
+4 more outcomes
Community forecast23 forecastersType: multiple choice
MANIFOLD MARKETSAlso available on Limitless
2026 Men’s US Open Winner (Tennis)
1mo
52.5%
21.5%
7.5%
+2 more outcomes
22 • Low qualitySpread unknownLow liquidityThin market
Total Vol$0
24h Vol$0
LIMITLESSRules
If Rafael Jodar wins the 2026 US Open Men's Singles professional tennis tournament, then the market resolves to Yes.
- The following market refers to the 2026 US Open Men's Singles professional tennis tournament.
- If the participant forfeits, withdraws from consideration, or takes any official action that removes them from being able to win the 2026 US Open Men's Singles professional tennis tournament, the market will resolve No for that participant.
- Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League.
- All trademarks, logos, and brand names are the property of their respective owners.
- If Jannik Sinner wins the 2026 US Open Men's Singles professional tennis tournament, then the market resolves to Yes.
Probabilities may differ due to different market structures, fees, and participant pools.
Large trades
$1.1k47.0%POLYMARKETWill Jannik Sinner win the 2026 Men's US Open? — Novladius34d ago
POLYMARKETWill Jannik Sinner win the 2026 Men's US Open? — Novladius34d ago$1.3k26.0%KALSHICarlos Alcaraz — Yes14d ago
KALSHICarlos Alcaraz — Yes14d agoVolume trend
$43.5kJul 228d of dataJul 29
Related Markets
ATP Los Cabos Winner
$3.9KLuciano Darderi: 1%KALSHI
KALSHI
Mubadala Citi DC Open: Alex de Minaur vs Stefanos Tsitsipas
$249.3KTsitsipas Set 1 O/U 8.5: 81%POLYMARKET
POLYMARKET
2026 Women’s US Open Winner (Tennis)
$110.5KAryna Sabalenka: 31%POLYMARKET
POLYMARKET2027 Australian Open - Men’s singles winner?
$590.6🇮🇹 Jannik Sinner: 28.2%MANIFOLD MARKETS
MANIFOLD MARKETSWho will be the next first-time men's singles Grand Slam winner in tennis?
$429.1Félix Auger-Aliassime: 5.4%MANIFOLD MARKETS
MANIFOLD MARKETS2026 Grand Slam Finalists? (men's tennis)
$367.5🇪🇸 Carlos Alcaraz (1): 100%MANIFOLD MARKETS
MANIFOLD MARKETSActive in these topics
Related News
Coalition of 44 state attorneys general says CFTC lacks authority over sports prediction marketsThe Block
NFL urges CFTC to strengthen rules on sports prediction markets: reportThe Block
KuCoin Marks Major Sponsorship Milestone as Ambassador Pogačar Wins Record Fifth Tour de FranceBlockchain Reporter
Galaxy Digital’s $75 Million Texas Tech Stadium Deal Is Crypto’s Boldest Branding Bet YetBlockchain Reporter
Galaxy Digital plants its name on Texas Tech football stadiumCrypto News
Galaxy Digital puts its name on Texas Tech football stadium in 15-year partnershipThe BlockRules
If Rafael Jodar wins the 2026 US Open Men's Singles professional tennis tournament, then the market resolves to Yes.
- The following market refers to the 2026 US Open Men's Singles professional tennis tournament.
- If the participant forfeits, withdraws from consideration, or takes any official action that removes them from being able to win the 2026 US Open Men's Singles professional tennis tournament, the market will resolve No for that participant.
- Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League.
- All trademarks, logos, and brand names are the property of their respective owners.
- If Jannik Sinner wins the 2026 US Open Men's Singles professional tennis tournament, then the market resolves to Yes.