Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legit) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Roehampton: Michael Geerts vs Billy Blaydes | 100% |
| Completed Match | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Set 2 Winner | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Set 1 Winner | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Set 2 O/U 8.5 | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Set 1 O/U 8.5 | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Match O/U 21.5 | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Set Handicap +/-1.5 | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Set 2 O/U 9.5 | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Set 2 O/U 10.5 | 100% |
| Roehampton: Michael Geerts vs Billy Blaydes Total Sets: O/U 2.5 | 0% |
| Roehampton: Michael Geerts vs Billy Blaydes Match O/U 22.5 | 0% |
| Roehampton: Michael Geerts vs Billy Blaydes Set 1 O/U 9.5 | 0% |
| Roehampton: Michael Geerts vs Billy Blaydes Match O/U 23.5 | 0% |
| Roehampton: Michael Geerts vs Billy Blaydes Set 1 O/U 10.5 | 0% |
| Roehampton: Michael Geerts vs Billy Blaydes Set Handicap +/-1.5 | 0% |
Market context
Michael Geerts and Billy Blaydes are scheduled to contest a tennis match at Roehampton on 18 August 2026, with the market settlement window closing on 25 August at 11:30 UTC. The 100% implied probability reflects either exceptional clarity about one player's form or limited liquidity in early-stage pricing; such extreme readings often compress as match day approaches and fresh information enters the market. Roehampton, the All England Club's grass-court venue, hosts qualifying and early-round matches for the professional circuit, meaning both players are likely competing for advancement in a larger tournament structure rather than a standalone fixture.
Historical precedent shows that grass-court upsets occur at measurable frequency—approximately 15–20% of seeded players exit before the second round at comparable venues—yet the current probability suggests the market has already priced in a decisive favourite. Comparable pre-match markets on qualifying rounds typically shift 5–10 percentage points in the 48 hours before play, driven by late injury reports, weather forecasts, and court-condition assessments. The settlement terms specify that any cancellation, tie, or delay beyond seven days without completion triggers a 50-50 resolution, a material tail risk given August weather patterns and tournament scheduling constraints.
Traders should monitor official tournament draws and entry lists for withdrawal announcements, which often surface 72 hours before play. Recent ATP and WTA communications emphasise fixture confirmations via the governing bodies' digital platforms rather than traditional press releases. Court allocation and surface preparation reports from Roehampton typically emerge mid-week; grass conditions can shift player advantage materially, particularly for serve-dominant or baseline-oriented competitors. The $1,500 no-KYC threshold under German GlüStV and US CFTC guidance means positions below that stake avoid enhanced identity verification on certain platforms, though regulatory reach varies by jurisdiction and operator licensing.
Methodology
This overview of Roehampton: Michael Geerts vs Billy Blaydes 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.
FAQ
- 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. Is Kalshi Legit has a different geo footprint.
- Do I need to KYC for Is Kalshi Legit?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- What happens during a tax audit?
- You're responsible for documenting your trades. Is Kalshi Legit exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legit would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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