Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legal in California) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ITF Roehampton: Charles Broom vs Oliver Tarvet | 100% |
| Completed Match | 100% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set 1 Winner | 100% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set 1 O/U 8.5 | 100% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set 2 Winner | 100% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Total Sets: O/U 2.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set 2 O/U 8.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Match O/U 21.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set Handicap +/-1.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set 2 O/U 9.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set 1 O/U 9.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Match O/U 22.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set 2 O/U 10.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Set 1 O/U 10.5 | 0% |
| ITF Roehampton: Charles Broom vs Oliver Tarvet Match O/U 23.5 | 0% |
Market context
The event is a men’s ITF Roehampton match between **Charles Broom** and **Oliver Tarvet**, and the crowd price of 100% YES implies the market is treating Broom as almost certain to advance. Public match data from the same tournament has already shown Broom ahead in the head-to-head live feed, while pre-match and live ranking snapshots put Broom higher than Tarvet, roughly ATP 283–287 versus 433–436, which helps explain why the market is effectively one-sided.[1][2][5]
For context, markets on ITF matches can still be sensitive to retirement, walkover and scheduling risk even when the on-court gap is clear, because the settlement rule depends on who advances rather than simply who looks stronger. That matters for accessibility as well: a platform marketed as “no-KYC up to $1,500” is typically usable for smaller positions without full identity checks, but larger stakes usually trigger verification, and German GlüStV constraints can restrict or complicate access for users in Germany even where the market itself is listed. Separate from local gambling rules, US CFTC reach can matter if a venue or user activity falls within derivatives-style oversight, though the practical effect depends on platform structure and jurisdiction.
The main catalysts are procedural rather than speculative: final order of play, any rescheduling, and whether the match is completed within the seven-day settlement window. A completed result between these players would resolve the market normally; by contrast, a cancellation, tie or a delay beyond seven days would push it to 50-50 under the contract terms. Traders should watch live draws and official score feeds closely, because Roehampton has already produced same-day completed results on the tournament circuit, making timing and completion the key variables rather than form alone.[11][15][18]
Methodology
This overview of ITF Roehampton: Charles Broom vs Oliver Tarvet 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 Legal in California has a different geo footprint.
- Do I need to KYC for Is Kalshi Legal in California?
- 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 Legal in California 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 Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
Trade ITF Roehampton: Charles Broom vs Oliver Tarvet on Is Kalshi Legal in California
Live order book, 0% fees, USDC settlement in seconds.
Open live market →