LoL: KT Rolster vs T1 (BO3) - LCK Round 3-4 Legend Group

Platform comparison

Market context

KT Rolster face T1 in a best-of-three League of Legends match within the LCK's Legend Group stage, scheduled for 21 August 2026. Polymarket currently prices KT's victory at 37 cents on the dollar, implying a 37% probability they take the series. The conditional token structure on Polygon settles in USDC upon match completion, with the resolution hinging on official LCK broadcast confirmation of the final result. Any cancellation or tie triggers a 50-50 split of the pool; postponement remains valid if rescheduled by 4 September 2026 at 23:59 ET.

T1's historical dominance in LCK competition provides the primary anchor for current pricing. The organisation has won four world championships and consistently finishes in the upper tier of regional play, establishing a baseline expectation that favours them in head-to-head matchups against most opponents. KT Rolster, whilst a storied franchise with multiple championship runs, has experienced recent roster transitions and variable form. The 37% probability reflects this asymmetry—traders are pricing in T1's structural advantages whilst acknowledging KT's capacity to execute on given days.

Traders should monitor LCK's official schedule confirmations and any roster announcements in the fortnight before the match. Player availability, particularly around key roles, can shift match dynamics materially. Recent patch notes from Riot Games (typically released fortnightly) may favour certain team compositions or playstyles, creating information edges for those tracking meta shifts. The settlement window closes at 16:00 UTC on 21 August, so live-match developments will be reflected in final pricing only if broadcast delays occur.

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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 PolyGram. 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%.