Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Who Will Win Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Who Will Win → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Who Will Win → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Who Will Win → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Who Will Win → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Who Will Win → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Who Will Win.
Active sub-markets
| Stuttgart Open: Mattia Bellucci vs Taylor Fritz Set 1 Winner | 100% Bellucci | 0% Fritz |
| Stuttgart Open: Mattia Bellucci vs Taylor Fritz Total Sets: O/U 2.5 | 100% Over 2.5 | 0% Under 2.5 |
| Completed Match | 100% YES | 0% NO |
| Stuttgart Open: Mattia Bellucci vs Taylor Fritz | 0% Mattia Bellucci | 100% Taylor Fritz |
| Stuttgart Open: Mattia Bellucci vs Taylor Fritz Set 2 O/U 8.5 | 100% Over | 0% Under |
| Stuttgart Open: Mattia Bellucci vs Taylor Fritz Set 2 O/U 9.5 | 100% Over | 0% Under |
Market context
The Stuttgart Open grass-court tournament will host a first-round encounter between Italian qualifier Mattia Bellucci and American Taylor Fritz in June 2026. The market is currently priced at 100% for a Bellucci victory, reflecting either extreme confidence in the Italian's chances or a technical pricing anomaly given the settlement window extends to 19 June—a week after the scheduled 12 June match date. Fritz, ranked significantly higher and seeded at most grass events, would ordinarily carry favouritism in such a matchup, yet the crowd-implied probability suggests near-certainty around Bellucci's advancement.
Comparable grass-court upsets at Stuttgart have historically favoured established players, though qualifiers occasionally penetrate early rounds when draw positioning aligns favourably. The 100% reading is unusual for any two-player tennis contest absent injury withdrawals or public forfeit announcements. Fritz's recent form and grass-court record typically position him as the stronger favourite in ATP 250 first-round play, making this pricing worthy of scrutiny for value-seeking traders.
Key catalysts include official injury reports or withdrawal notices from either player in the days preceding 12 June, confirmation of final seeding and draw placement, and any late schedule adjustments by the Stuttgart tournament organisers. Weather forecasts for the match date may also influence preparation patterns. Traders should monitor ATP official communications and player social media for fitness updates, particularly given grass-court surfaces' unforgiving nature for players carrying minor injuries into competition.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Who Will Win, which mirrors the Polymarket order book directly.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- 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.
- What does it cost to trade on Who Will Win?
- Zero. Who Will Win routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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, Who Will Win triggers a quick verification flow that finishes in minutes.
Trade Stuttgart Open: Mattia Bellucci vs Taylor Fritz on Who Will Win
Live order book, 0% fees, USDC settlement in seconds.
Trade on Who Will Win →