HSBC Championships: Arthur Rinderknech vs Hamad Medjedovic

Platform comparison

Active sub-markets

Market context

The HSBC Championships, held annually in Shanghai, is one of tennis's premier Masters 1000 events. Arthur Rinderknech, a French left-hander ranked in the 40s, faces Hamad Medjedovic, a rising Serbian prospect, in a first-round match scheduled for 15 June 2026. The 0% implied probability reflects either minimal trading activity or strong consensus that one player will not compete. Settlement occurs by 22 June; any match delayed beyond seven days without completion triggers a 50-50 split resolution.

Historical precedent shows that Masters 1000 first-round matches rarely fail to complete once scheduled, though injury withdrawals before play begins are not uncommon. Rinderknech has struggled with durability issues throughout his career, whilst Medjedovic remains relatively untested at this level. The absence of recent injury reports or withdrawal announcements as of early June 2026 would be the primary catalyst shifting probability away from zero. Tournament draws typically confirm 48 hours before play; any late schedule changes or player statements regarding fitness would materially alter market expectations.

From a regulatory standpoint, this market's accessibility depends on jurisdiction. Under German GlüStV rules, prediction markets on individual sports matches require explicit licensing; UK-domiciled traders face no KYC requirement up to £1,500 notional exposure, though operators must still verify identity for accounts exceeding that threshold. US CFTC reach extends to US persons trading on offshore platforms, though the agency has not actively enforced against individual sports prediction markets. Traders should confirm their operator's compliance posture before entry.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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

Where can I trade this market with the lowest fees?

On Polymarket Tax UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Polymarket Tax UK?

Zero. Polymarket Tax UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.