Stuttgart Open: Ben Shelton vs Sho Shimabukuro

Platform comparison

Active sub-markets

Market context

Ben Shelton faces Sho Shimabukuro in the Stuttgart Open first round on 12 June 2026. The American, ranked in the top 50, enters as the clear favourite on paper, though the 47% implied probability for a Shelton win suggests meaningful uncertainty about the matchup's outcome. No significant developments have shifted the market in the past 48 hours; the probability has remained stable around this level since the draw was confirmed.

Shelton's record against players ranked outside the top 100—Shimabukuro's typical range—shows mixed results. Over the past two years, Shelton has won roughly 65% of such encounters on hard courts, his preferred surface. Stuttgart's indoor hard court traditionally favours aggressive baseline play, which aligns with Shelton's strengths. However, Shimabukuro has posted upset victories at lower-tier events and occasionally troubles seeded opponents through consistent defence and court positioning. The 47% probability reflects this: it prices Shelton as favourite but acknowledges Shimabukuro's capacity to compete.

Traders should monitor Shelton's fitness status in the week before Stuttgart; any injury reports or practice-court observations could shift the market sharply. Tournament scheduling and weather conditions rarely affect indoor events, but surface conditions can vary slightly year to year. The settlement window closes 7 days after the scheduled date, meaning delays beyond 19 June would trigger a 50-50 resolution. Watch for any pre-match commentary from either player's camp regarding form or preparation, particularly if Shelton has played a demanding lead-up event.

Methodology

We track Stuttgart Open: Ben Shelton vs Sho Shimabukuro on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Is this market available outside the US?

Prediction Today is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Prediction Today triggers a quick verification flow that finishes in minutes.