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Live prediction market odds for Brandon Nakashima vs. Ben Shelton. Compare prices across Kalshi and Polymarket.

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Claim offerLegal in USAVerified Sep 14, 2026

MARKET RESOLVEDKalshi / Polymarket

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Ben Shelton Wins: Brandon Nakashima vs. Ben Shelton

ATP·Resolved 2026-08-14

This market resolved on 2026-08-14. Ben Shelton was the officially declared outcome. Prior to resolution, the market peaked at 99%.

About This Market

Brandon Nakashima vs.

Brandon Nakashima vs. Ben Shelton — ATP Tennis match held on 2026-08-14. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.

Price History

Multi-Platform Probabilities
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Final odds
Loading 30D data…

Final Closing Odds

2 platforms
Candidate
Kalshi
Polymarket
Ben SheltonWINNER
99%100%
Brandon Nakashima
1%0%

Resolution Oracles

KalshiKalshi
Kalshi Rules
PolymarketPolymarket
UMA Optimistic OracleConsensus of Sources
Read Full Market Rulebooks
Stats
Spread0.9%
Platforms2
Candidates2
Winner

Ben Shelton

99.5% avg

Market RulebooksOfficial settlement criteria and edge cases

Market Rulebook: Brandon Nakashima vs. Ben Shelton

Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket.

KalshiKalshi
Primary Rule

If Brandon Nakashima wins the Shelton vs Nakashima professional tennis match in the 2026 ATP Montreal Final after a ball has been played, then the market resolves to Yes.

Edge Cases

The following market refers to the Shelton vs Nakashima professional tennis match in the 2026 ATP Montreal Final after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks). 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.

Resolution Oracles
Kalshi Rules
PolymarketPolymarket
Primary Rule

This market refers to the tennis match between Ben Shelton and Brandon Nakashima in the National Bank Open, originally scheduled for August 13, 2026 at 8:00PM ET. This market will resolve to 'Ben Shelton' if Ben Shelton advances against Brandon Nakashima. This market will resolve to 'Brandon Nakashima' if Brandon Nakashima advances against Ben Shelton. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.

Resolution Oracles
UMA Optimistic OracleConsensus of Sources

Frequently Asked Questions

What does the Brandon Nakashima vs. Ben Shelton prediction market track?

The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket in one place. Each price reflects the market’s implied probability, not a guaranteed result. This event is archived; prices shown are historical.

What were the last available Brandon Nakashima vs. Ben Shelton odds?

The last available prices are Ben Shelton: 99.0¢ on Kalshi, 99.9¢ on Polymarket; Brandon Nakashima: 1.0¢ on Kalshi, 0.1¢ on Polymarket. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity. The last available price is not necessarily the final settlement price.

Why do Brandon Nakashima vs. Ben Shelton odds vary across prediction markets?

The largest price difference shown across venues is 0.9 percentage points. Venues have different traders, liquidity and fees, so their prices can differ. A price gap alone does not establish an executable arbitrage opportunity; compare settlement rules and the actual buy and sell prices.

How do Brandon Nakashima vs. Ben Shelton prediction market payouts work?

For example, Ben Shelton at 99.5¢ implies about a 99.5% chance. For a standard $1 contract, a share pays $1 if its outcome settles as correct and $0 if it settles as incorrect. A winning share bought at 40¢ earns 60¢ before fees. Check each venue’s settlement rules, fees and eligibility before trading. Historical prices alone do not identify the winning outcome.

No price history available