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

Platform comparison

Market context

Dplus KIA and KT Rolster are scheduled for a best-of-three in the LCK Round 3-4 Legend Group, and the market’s 59% implied probability for Dplus KIA is consistent with a slight favourite rather than a dominant one. The head-to-head record across 29 matches still leans Dplus KIA, who have taken 17 of those meetings, but the recent run is much tighter: the teams split their last six match-ups 3-3, and KT have already beaten Dplus KIA 2-0 in a 2026 LCK series[3][9].

For a programmatic trading setup, the useful read is that the current price is being driven by a blend of historical edge and more mixed short-term form. Tips.GG shows Dplus KIA with a 56% win rate over the last 30 days versus KT’s 78%, while Polymarket’s own team odds snapshot has this match near 62%/39%, so the live market is still pricing uncertainty rather than a clean directional edge[3][6]. A bot or conditional-order workflow would typically watch whether the line moves off that band after line-up confirmation, given that recent head-to-head results have not been one-sided[3][12].

The main catalysts before settlement are simple: confirmation the match is played on schedule, any change to the start time, and starting line-ups or substitution news from LCK coverage or official match pages. Recent reporting on KT’s broader LCK form shows they are still in contention around the top of the table, which matters because late-season motivation can affect map selection and draft intensity in BO3s[14]. If the fixture is postponed beyond seven days, cancelled, or ends without a completed winner, the market rules shift to 50-50 rather than paying out on the pre-match favourite.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track LoL: Dplus KIA vs KT Rolster (BO3) - LCK Round 3-4 Legend Group across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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 Bot UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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%.