Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
89% | 11% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
89% | 11% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
Market context
Casper Ruud faces Roman Safiullin in the opening rounds of Roland Garros in May 2026, with the market pricing Ruud's advancement at 89 per cent. Ruud, a two-time French Open finalist, enters as the clear favourite against Safiullin, a Russian qualifier who has made limited impact on the ATP circuit. The Norwegian's clay-court pedigree and seeding advantage create a substantial gap in perceived likelihood, though early-round upsets at the French Open remain a recurring feature of the tournament's narrative.
Ruud's record on clay over the past three seasons shows consistent progression to later rounds at Roland Garros, reaching the final twice and rarely exiting before the quarterfinals. Safiullin's trajectory offers limited comparable data; his career-high ranking sits outside the top 100, and his previous Grand Slam appearances have yielded minimal advancement. Historical patterns suggest unseeded or lowly-ranked players overturn such odds roughly 10–12 per cent of the time in opening-round clay matchups, which aligns reasonably with the 11 per cent implied probability for Safiullin.
The key variable for traders centres on Ruud's fitness and form entering the tournament. Any late injury announcement or withdrawal would trigger an automatic 50–50 resolution under market rules. Safiullin's path to the main draw—whether as a direct entry or qualifier—will also shape his conditioning heading into the match. Weather delays extending beyond seven days without completion would similarly force a split resolution. Monitor ATP injury reports and Roland Garros draw confirmations in early May for material shifts in the underlying matchup dynamics.
Methodology
We track Roland Garros ATP: Casper Ruud vs Roman Safiullin on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What does it cost to trade on PolyGram?
- Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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