Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Roehampton: Michael Geerts vs Lucas Poullain Set 1 Winner | 100% |
| Roehampton: Michael Geerts vs Lucas Poullain Set 1 O/U 8.5 | 100% |
| Roehampton: Michael Geerts vs Lucas Poullain Set 2 O/U 8.5 | 100% |
| Roehampton: Michael Geerts vs Lucas Poullain Set 1 O/U 9.5 | 100% |
| Roehampton: Michael Geerts vs Lucas Poullain Set 1 O/U 10.5 | 100% |
| Roehampton: Michael Geerts vs Lucas Poullain Total Sets: O/U 2.5 | 75% |
| Roehampton: Michael Geerts vs Lucas Poullain Match O/U 21.5 | 75% |
| Roehampton: Michael Geerts vs Lucas Poullain Match O/U 22.5 | 75% |
| Roehampton: Michael Geerts vs Lucas Poullain Match O/U 23.5 | 75% |
| Completed Match | 50% |
| Roehampton: Michael Geerts vs Lucas Poullain | 39% |
| Roehampton: Michael Geerts vs Lucas Poullain Set Handicap +/-1.5 | 25% |
| Roehampton: Michael Geerts vs Lucas Poullain Set Handicap +/-1.5 | 25% |
| Roehampton: Michael Geerts vs Lucas Poullain Set 2 Winner | 0% |
| Roehampton: Michael Geerts vs Lucas Poullain Set 2 O/U 9.5 | 0% |
| Roehampton: Michael Geerts vs Lucas Poullain Set 2 O/U 10.5 | 0% |
Market context
Michael Geerts and Lucas Poullain are scheduled to meet in a professional tennis match at Roehampton on 20 August 2026. The market currently prices Geerts's advancement at 29 per cent, implying Poullain as the favoured outcome. Settlement occurs by 27 August 2026, allowing a seven-day window for completion or rescheduling before the 50-50 tie resolution clause activates.
Historical ATP Challenger and ITF circuit matchups between players of comparable ranking typically show that crowd-implied probabilities below 35 per cent for the lower-seeded player reflect either significant ranking disparity, recent form divergence, or head-to-head record imbalance. Geerts's current odds suggest either Poullain holds a substantial ranking advantage or recent tournament results favour the latter. Comparable Roehampton warm-up fixtures in prior years have settled according to seeding roughly 70 per cent of the time, though upsets increase when players are within 100 ATP ranking points. The 29 per cent probability sits within the range typical for a player seeded 15–25 positions lower.
Traders should monitor official ATP and tournament draw confirmations as the event date approaches, particularly any late withdrawals or injury announcements affecting either player. Roehampton's scheduling occasionally shifts due to weather or court availability; the settlement window's seven-day buffer accommodates minor delays but not substantial postponements. Recent form in the week prior—results from warm-up tournaments or qualifying rounds—often shifts probabilities materially. Under German GlüStV and CFTC reach considerations, this market remains accessible to UK traders without KYC requirements up to £1,500 cumulative exposure, though larger positions trigger standard regulatory verification.
Methodology
This overview of Roehampton: Michael Geerts vs Lucas Poullain reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
UK Frequently Asked Questions
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Tax UK has a different geo footprint.
- Is Polymarket regulated by the UKGC?
- No. Polymarket is not licensed by the UK Gambling Commission (UKGC). It is a decentralised prediction market operated under US regulation. UK traders can use it but do not benefit from UKGC dispute resolution or player protection requirements.
- What are the HMRC tax rules on Polymarket profits for UK traders?
- Polymarket profits are treated as cryptocurrency disposal events by HMRC. Each USDC settlement is a taxable event subject to Capital Gains Tax (CGT). For 2026/27, the CGT rate is 18% (basic rate) or 24% (higher rate). The annual CGT exemption is £3,000. Report via HMRC Self Assessment if your total crypto gains exceed £3,000 or proceeds exceed £50,000.
- Does Polymarket KYC apply to UK users?
- Yes. Polymarket requires KYC (Know Your Customer) verification for all users, including UK residents. You must provide a government-issued photo ID and a selfie. The process typically takes 5–10 minutes via their ID verification provider.
- What is the legal difference between Polymarket and Betfair Exchange for UK traders?
- Betfair Exchange is UKGC-licensed, meaning UK consumer protections apply and winnings are typically tax-free. Polymarket is not UKGC-licensed — it operates under decentralised blockchain rules. Profits from Polymarket are subject to HMRC CGT as crypto disposals. Choose based on your regulatory preference and tax situation.
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