Roland Garros ATP: Quentin Halys vs Mattia Bellucci

Platform comparison

Active sub-markets

Market context

Polymarket currently prices Halys's advancement at 62 cents on the dollar, implying a modest but meaningful edge over Bellucci in this first-round Roland Garros ATP encounter scheduled for 24 May 2026. The conditional token structure on Polygon means traders holding YES positions benefit directly if Halys progresses; USDC settlement occurs within the seven-day window specified, with any match delay beyond that threshold collapsing the market to even odds regardless of eventual outcome.

Halys, a French player ranked in the 200s, has historically struggled to sustain runs at majors despite occasional ATP-level wins on clay. Bellucci, an Italian qualifier or low-ranked entrant, typically occupies similar territory in the rankings. First-round matchups between players of comparable standing and surface preference—both have limited clay-court pedigree—tend to resolve along seeding and recent form rather than historical head-to-head records, which are sparse or non-existent. The 62% probability reflects modest confidence in Halys rather than overwhelming favouritism, consistent with how Polymarket prices encounters between fringe competitors where injury, weather, and scheduling disruptions carry outsized influence.

Traders should monitor Roland Garros draw announcements and any late withdrawals that might alter seeding or scheduling. Recent ATP injury reports and clay-court warm-up results from April and early May 2026 will clarify fitness levels. The 5:00 AM ET start time creates execution risk for traders managing positions across time zones; any weather delays affecting the clay courts could compress the settlement window and trigger the 50-50 resolution clause if the match extends beyond seven days without completion.

Methodology

We track Roland Garros ATP: Quentin Halys vs Mattia Bellucci 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.