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

Platform comparison

Market context

Polymarket is pricing Dplus KIA at **59%** and KT Rolster at 41% on the USDC-settled Polygon contract, so the market is leaning to a DK win but not strongly enough to call it a clean favourite. The match is scheduled for 9 August at 08:00 UTC, and because the settlement rule is binary unless the game is cancelled, tied, or pushed beyond the seven-day window, traders are really buying or selling the likelihood of a completed BO3 result rather than the wider series narrative.[1][7]

The main read on that 59% is that it sits close to the market’s own team and map pricing, which shows DK slightly ahead in the match contract while KT has meaningful counterweight in the game-level markets.[9] Historical head-to-head data is mixed rather than one-sided: Tips.GG lists Dplus with 17 wins from 29 meetings overall, but over the last 12 months the split is even at 3-3, and KT’s recent match pages and older clips reflect a series history where either side can take control once drafts and early objectives break their way.[15][17]

For traders, the key catalysts are the final roster confirmation, any schedule change, and whether the LCK broadcast starts on time, because Polymarket settles on the actual match outcome and has explicit no-result handling if play is delayed or abandoned.[7][1] Sofascore currently lists the fixture at 08:00 UTC, so the practical risk is less about the market disappearing than about last-minute official adjustments before lock, which would matter for a contract sitting near the market’s middle rather than deep in either direction.[1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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

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%.