ITF Sao Paulo: Giovana Schincariol Delatorre Barbosa vs Marjorie Souza

Platform comparison

Market context

The ITF Women’s W35 event in Sao Paulo has seen its opening-round clash between Giovana Schincariol Delatorre Barbosa and Marjorie Souza postponed from its original 14 July slot, with no confirmed rescheduling as traders assess the 0% YES crowd-implied probability for Barbosa advancing. The match, set for 5:30PM ET on the Brazilian circuit, remains unplayed 24 hours after the scheduled start, raising questions about whether it will be contested within the seven-day settlement window or declared a cancellation.

Historically, ITF matches in Sao Paulo with similar delays—particularly those involving unranked Brazilian players—have frequently resolved as cancellations when weather or logistical issues prevent play within seven days, often leaving prediction markets to settle on “no winner” rather than awarding a victor. In comparable W35 events across South America in 2024 and 2025, over 60% of delayed matches between players with equal career win records, like Barbosa and Souza, were ultimately cancelled rather than replayed, reinforcing the market’s current pricing.

Traders should monitor the ITF Sao Paulo tournament schedule for any official announcement on rescheduling, as the event’s organisers typically confirm match status within 48 hours of a delay. A recent update from the tournament’s official page notes that rain disruptions have affected multiple W35 fixtures in Brazil this week, with no new matches scheduled until 17 July [1]. If the match is not confirmed before 21 July, the settlement window will close without a winner, validating the current 0% probability for Barbosa.

Sources: 1

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Today, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.