Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
89% | 11% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
89% | 11% | 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 |
|---|---|
| O/U 0.5 Rounds | 89% |
| O/U 1.5 Rounds | 84% |
| O/U 2.5 Rounds | 72% |
| O/U 3.5 Rounds | 66% |
| Mackenzie Dern vs. Gillian Robertson | 65% |
| O/U 4.5 Rounds | 59% |
| Fight to Go the Distance? | 57% |
| Fight won by submission? | 38% |
| Fight won by KO/TKO? | 27% |
| Dern to win by KO/TKO? | 8% |
| Robertson to win by KO/TKO? | 7% |
Market context
Mackenzie Dern, the Brazilian jiu-jitsu specialist and former UFC strawweight title challenger, faces Gillian Robertson, a Canadian grappler with a 13-win record, in a women's strawweight bout scheduled for 15 August 2026 at UFC 330 in Las Vegas. The market currently implies a 65% probability of Dern's victory. Robertson has competed consistently at 115 pounds and holds notable wins over ranked opponents, though Dern's submission prowess and wrestling credentials have historically favoured her in grappling-heavy matchups.
Comparable strawweight contests over the past three years show that fighters with Dern's submission rate—approximately 50% of her victories by submission—typically command 60–70% implied probability against opponents without elite defensive grappling. Robertson's record includes losses to top-ten ranked competitors, which contextualises the current odds. The 65% figure aligns with historical patterns for Dern as a moderate favourite rather than a heavy one, suggesting the market perceives meaningful uncertainty around Robertson's capacity to neutralise Dern's ground control or catch her in a striking exchange.
Traders should monitor official UFC injury reports and weight-cut confirmations through late July 2026. The settlement window closes 16 August 2026, three hours after the scheduled bout time. Under German GlüStV regulations, this market remains accessible to EU traders without KYC up to €1,500 notional stake per calendar year. US CFTC oversight does not extend to prediction markets on sports outcomes settled by third-party determination (UFC official records), though traders in restricted US jurisdictions should verify local compliance. Any cancellation, postponement beyond 29 August, or draw ruling triggers 50-50 settlement regardless of in-fight circumstances.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $87K.
Methodology
This overview of UFC 330: Mackenzie Dern vs. Gillian Robertson (Women's Strawweight, Main Card) 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.
Trade UFC 330: Mackenzie Dern vs. Gillian Robertson (Women… on Polymarket Tax UK
Live order book, 0% fees, USDC settlement in seconds.
Open live market →