Roland Garros, Qualification ATP: Arthur Fery vs Pedro Martinez

Platform comparison

Active sub-markets

Market context

Arthur Fery and Pedro Martínez are scheduled to meet in Roland Garros qualifying on clay, with the market currently implying virtually no chance of a Fery win. That pricing is much lower than the sort of double-digit prices often seen on exchange-style books when an unseeded qualifier faces a top-150 clay specialist, and it stands out even more on Kalshi, where the event is expressed as a binary probability rather than a decimal price. On Betfair or Smarkets, traders usually compare the same view through odds after commission, so a 0% crowd price on Polymarket can still coexist with a small backable number elsewhere once fees and liquidity are taken into account. Fery’s recent form data looks respectable overall, but Martínez’s profile is the more relevant comparator here: a established clay-court player with a higher ranking and a stronger record at ATP level, which is why the market has anchored so firmly in his direction.

The main catalysts are procedural rather than news-driven: whether the match stays on Court 10 as scheduled, whether the players are confirmed in the official order of play, and whether there is any rain interruption or rescheduling within the seven-day settlement window. Tennis Majors and SofaScore both list the fixture for 20 May on clay in Paris, which makes an outright cancellation unlikely, but any walkover, retirement before completion, or postponement past the window would matter for resolution. For traders comparing Polymarket with Kalshi, the key difference is that Kalshi’s price often moves in 1-cent increments while Polymarket’s crowd-implied probability can sit at zero when order book depth is thin; Betfair and Smarkets may show a slightly different figure again because of commission and the availability of matched liquidity, especially on a qualifying match with a modest audience and limited pre-match volume.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read Roland Garros, Qualification ATP: Arthur Fery vs Pedro Martinez from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

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). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

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 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.