LoL: ROSSMANN Centaurs vs BIG (BO3) - Prime League 1st Division Group A

Platform comparison

Market context

Polymarket is pricing **ROSSMANN Centaurs vs BIG** at **0% YES** today, so the contract is effectively treating a Centaurs win as a near-impossible outcome and a BIG win as the base case for the on-chain conditional tokens settled in USDC on Polygon. The market is for a BO3 in Prime League 1st Division Group A, with the scheduled start listed at **5:00 PM UTC / 1:00 PM ET**, and the resolution rules still matter: if the match is never played, ends tied, or is delayed more than seven days without a winner, the market falls to 50-50 rather than paying out a side. [1][2]

The current price sits in line with the historical matchup pattern. Big has already beaten ROSSMANN Centaurs in this split: Pacescore shows a **1–0** result on **7 July 2026**, and Polymarket’s own earlier BO1 market description said BIG led the Group A standings while ROSSMANN Centaurs were on **0 points** after seeding losses. A trader reading the 0% print should therefore treat it less as a forecast of an upset and more as a signal that the market sees little edge beyond the established head-to-head and season-long mismatch. [4][3][9]

The main catalysts are operational rather than theoretical: whether the series actually starts on time, whether the Prime League schedule is unchanged, and whether any roster or format news emerges close to lock. Independent match listings still show the fixture as a **BO3** in Group A, which supports normal settlement on a completed series if it goes ahead; by contrast, any cancellation, walkover uncertainty, or extended postponement would shift the payout mechanics materially. [1][2][6]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track LoL: ROSSMANN Centaurs vs BIG (BO3) - Prime League 1st Division Group A across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

UK Frequently Asked Questions

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.