LoL: Movistar KOI vs GIANTX (BO3) - LEC Regular Season

Platform comparison

Market context

Polymarket is pricing Movistar KOI to win this best-of-three against GIANTX at about **66%**, with settlement determined by the match result on the Polygon-based, USDC-settled conditional token contract. For traders, the key is that this market resolves on the actual series outcome: a KOI win pays the yes side, a GIANTX win pays the no side, and a cancellation, tie, or delay beyond seven days from the scheduled date pushes it to 50-50 under the market rules.

That level looks broadly consistent with the recent matchup record, which has tilted towards KOI in head-to-head meetings. Recent preview data shows KOI holding the edge over GIANTX in prior LEC clashes, including a 2-0 win in their latest meeting, while KOI has also been described as the stronger side in longer series because of better macro and objective play.[1][3][17] At the same time, the market is not pricing this as a blowout, which fits the fact that GIANTX have still shown enough form to take maps and, in some reports, rank above KOI in broader form-based metrics.[1][17]

The main catalysts are straightforward: confirmation that the series starts on time, draft-side information once line-ups are locked, and any late competitive schedule change from Riot or the LEC broadcast team. Live match listings place the start around 17:15 UTC, and the contract window runs to the same-day settlement cutoff, so a postponed start, technical issue, or abandoned series would matter more here than in a normal outright bet.[13][17] Because this is a best-of-three, map one matters, but not enough to settle the market; traders will usually watch whether KOI can convert its historical edge into early tempo or whether GIANTX can force a longer series and keep the implied probability under pressure.[1][3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews LoL: Movistar KOI vs GIANTX (BO3) - LEC 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 Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

UK Frequently Asked Questions

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 Polymarket Alternative UK. 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.

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%.