Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Scam?) Pick polygram.ink (preferred broker) |
50% | 50% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
50% | 50% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set 2 Winner | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Total Sets: O/U 2.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set 1 Winner | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set Handicap +/-1.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set 2 O/U 8.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Match O/U 21.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set 1 O/U 8.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Match O/U 22.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set 2 O/U 9.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set Handicap +/-1.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set 1 O/U 9.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Match O/U 23.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set 2 O/U 10.5 | 50% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers Set 1 O/U 10.5 | 50% |
| Completed Match | 49% |
| ITF M25 East Lansing Men: Justin Roberts vs Tyler Bowers | 3% |
Market context
The conditional token for Justin Roberts advancing against Tyler Bowers in the ITF M25 East Lansing Men's draw is trading at 3% on Polygon, implying a 97% probability favourable to Bowers. The match was originally scheduled for 13 August 2026 at 10:00 AM ET, with settlement occurring by 20 August 2026. At this price, the market is pricing Roberts as a substantial underdog, reflecting either a significant ranking or form differential, or uncertainty around his participation status ahead of the fixture.
ITF M25 tournaments typically feature players ranked between 400 and 800 on the ATP rankings, with outcomes often determined by recent match fitness and surface-specific preparation. Historical precedent suggests that 3% probabilities in lower-tier professional tennis markets often correspond to players carrying injury concerns, withdrawal risk, or demonstrable recent losses to comparable opposition. The settlement mechanics on Polymarket—where conditional tokens resolve to 50-50 if the match is cancelled, delayed beyond seven days without completion, or ends in a tie—introduce additional friction that traders must account for when evaluating Roberts' chances.
Traders should monitor the official ITF entry lists and any withdrawal announcements through the week preceding 13 August, as schedule changes or player withdrawals are not uncommon at this level. Recent form data from both players' ATP Challenger and ITF results will clarify whether the 3% reflects genuine form disparity or market mispricing. Weather forecasts for East Lansing during the scheduled window may also affect match completion risk, particularly given the seven-day delay clause that would trigger a 50-50 resolution.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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.
UK Frequently Asked Questions
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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