ITF Roehampton: Charles Broom vs Oliver Tarvet

Platform comparison

Market context

Charles Broom and Oliver Tarvet have already been priced as a very one-sided match, with the crowd-implied probability at **100% YES** on Broom and sportsbook-style listings also leaning his way. That is consistent with the pre-match shape of the contest: Broom is the higher-ranked player, around ATP 287 versus Tarvet’s roughly ATP 436, and multiple tennis data pages showed Broom as the favourite before play, with market prices in the same direction. [1][2][7][8]

The historical frame is straightforward: in ITF events, the market can look “certain” when the ranking gap is modest but the surface, form, and draw all point the same way, yet live tennis can still reset quickly if the favourite starts slowly or the match is interrupted. Broom’s overall hard-court record has been stronger than Tarvet’s across season-long summaries, which helps explain why outside models and bookmaker pricing have tended to favour him rather than treat this as a true coin flip. [3][18] The absence of any prior head-to-head also limits the usefulness of direct matchup history, so traders are mostly reading rankings, recent results, and the tournament context rather than a long rivalry sample. [2][3]

The main catalysts are practical rather than speculative: whether the match is actually completed inside the settlement window, whether the official draw and court schedule keep this pairing on the board, and whether any retirement, walkover, or postponement changes the resolution path. Kalshi’s contract is specifically tied to Broom advancing against Tarvet, but the market description also makes clear that a cancellation, tie, or delay beyond seven days would push resolution to 50-50, so scheduling certainty matters as much as form. [7] If a result appears on live-score services, that is the clearest near-term signal; if not, the contract is exposed to the usual ITF risks around delays and incomplete matches. [1][5]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews ITF Roehampton: Charles Broom vs Oliver Tarvet across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi vs Polymarket, which mirrors the Polymarket order book at 0% fees.

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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.