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

Platform comparison

Market context

Movistar KOI against GIANTX is priced like a **66% favourite** for KOI, so the market is implying the Spanish side wins roughly two times out of three. That is broadly consistent with the recent match history: KOI beat GIANTX **2-0** in the Spring 2026 regular season, and the broader head-to-head has generally leaned KOI’s way in longer series, while GIANTX have tended to rely more on aggressive early-game setups to steal maps.[1][17]

From a handicapper’s angle, the consensus sits with KOI, but the value question is whether that edge is already fully reflected in the current number. Recent previews also frame KOI as the more stable team with better macro and objective control, while GIANTX are described as the more volatile side with upset potential if they get ahead early or draft well for a best-of-three.[1] That makes the contrarian case a GIANTX series win only if you believe their higher-variance style is underpriced against a relatively firm favourite.

The main catalysts to watch are roster or roster-adjacent announcements, any last-minute scheduling change, and whether either side arrives with a different read on the patch or draft priorities; the market rules also matter because a cancellation, a tie, or a delay beyond seven days would settle to 50-50 rather than on the match winner. As of the latest match listings, the fixture remained scheduled for the LEC Summer 2026 regular season slot, with no obvious sign of a reset or postponement.[1][4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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 Who Will Win. 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%.