Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Robinhood Prediction Markets) 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 |
|---|---|
| Todi: Maxim Mrva vs Alex Barrena | 100% |
| Completed Match | 100% |
| Todi: Maxim Mrva vs Alex Barrena Set 2 Winner | 100% |
| Todi: Maxim Mrva vs Alex Barrena Set 1 O/U 8.5 | 100% |
| Todi: Maxim Mrva vs Alex Barrena Set 1 Winner | 100% |
| Todi: Maxim Mrva vs Alex Barrena Set Handicap +/-1.5 | 100% |
| Todi: Maxim Mrva vs Alex Barrena Match O/U 21.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Total Sets: O/U 2.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 2 O/U 8.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Match O/U 22.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 2 O/U 9.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 1 O/U 9.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set Handicap +/-1.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Match O/U 23.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 2 O/U 10.5 | 0% |
| Todi: Maxim Mrva vs Alex Barrena Set 1 O/U 10.5 | 0% |
Market context
Maxim Mrva and Alex Barrena are scheduled to meet in the Todi tournament on 15 August 2026. The match represents a lower-tier ATP Challenger event where both players typically compete for ranking points and prize money. Settlement occurs by 22 August 2026, allowing a seven-day window for rescheduling before the market defaults to 50-50 if no winner is determined. The 100% implied probability currently displayed suggests either extremely one-sided odds or a technical display issue across major platforms—Polymarket's decimal format and Kalshi's binary structure would both show this differently, with Polymarket displaying odds around 100.00 and Kalshi showing near-zero cents per share for Barrena.
Mrva, a Slovak player ranked outside the top 200, has competed sporadically on the Challenger circuit with mixed results in 2026. Barrena, a Spanish player with similar ranking trajectory, brings comparable experience at this level. Historical Challenger matches between unranked or low-ranked players rarely settle at such extreme probabilities unless one player has withdrawn pre-tournament or carries significant injury concerns. Betfair and Smarkets typically reflect more balanced odds in such matchups, with KYC requirements varying—Betfair requires full verification for UK users whilst Smarkets offers tiered access. The current 100% reading warrants verification across platforms before committing capital.
Traders should monitor official Todi tournament announcements for any player withdrawals or schedule changes. Recent ATP Challenger calendars have seen increased fixture postponements due to weather and venue constraints. Confirmation of both players' participation and fitness status typically emerges 48–72 hours before scheduled play. No recent news sources have flagged either player's availability as uncertain, though lower-tier events receive minimal media coverage.
Methodology
This page compares Todi: Maxim Mrva vs Alex Barrena specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.
FAQ
- Polymarket vs Kalshi — which is better?
- Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
- What does Polymarket cost vs Kalshi?
- Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
- What about Smarkets as an alternative?
- Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Are all these platforms regulated?
- No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
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