LoL: Once Upon A Team vs ZennIT (BO3) - Road Of Legends Regular Season

Platform comparison

Market context

Once Upon A Team are scheduled to play ZennIT in a best-of-three League of Legends regular-season match, and the market will pay out on the actual winner, with a 50-50 fallback only if the series is not played, is tied, or is delayed beyond seven days without a result. For a programme that reads prices mechanically, the key is that the 100% crowd-implied Yes level is a pure sentiment print, not a guarantee of settlement: the event page and live scoreboard still matter if the fixture is postponed, rescheduled, or never reaches completion.[4][18]

Comparable results suggest ZennIT have had the edge in the matchup across a longer sample, but the most recent completed meeting went the other way: Once Upon A Team beat ZennIT 2-1 on 14 May 2026.[2][11] Earlier head-to-head pages also show ZennIT leading the broader series count, with several past wins across 2024 and 2025, which is the sort of history a bot would typically encode as a prior rather than a decisive signal because roster turnover and patch changes can move strength quickly in domestic League play.[7][11]

For a trader watching this programmatically, the useful catalysts are fixture confirmation, lobby start, series completion, and any late schedule notes from tournament or score providers. If the match page flips to finished, the result should be checked against the official scoreboard and a second source before any automated hedge or close-out; if the match slips past its window, the contract mechanics point to the 50-50 outcome instead of a normal winner settlement.[1][4][18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews LoL: Once Upon A Team vs ZennIT (BO3) - Road Of Legends Regular Season 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 Polymarket Bot UK, which mirrors the Polymarket order book at 0% fees.

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%.