LoL: Team Vitality vs Movistar KOI (BO5) - LEC Playoffs

Platform comparison

Active sub-markets

Market context

Team Vitality face Movistar KOI in the LEC Upper Bracket Semifinal on 23 May, with the winner advancing directly to the final. The 9% implied probability on Polymarket reflects Vitality's standing as heavy favourites, though the decimal odds representation differs across platforms—Kalshi and Smarkets would display this as roughly 10.5–11.0 in decimal format, whilst traditional bookmakers use fractional odds around 10/1 against. The fee structures vary materially: Polymarket charges 2% on both sides, Kalshi takes 2% on winners only, and Betfair's commission scales from 2–5% depending on market liquidity, which affects the true cost of backing the underdog at such long odds.

Vitality's recent form and roster stability provide the foundation for their favouritism. The organisation has maintained a consistent starting five throughout the Spring Split, whilst KOI experienced mid-season roster adjustments that created integration risk. Head-to-head records in the regular season favour Vitality, though KOI's playoff performance against lower-seeded teams demonstrated resilience in high-pressure matches. The LEC's patch cycle and any champion pool shifts announced before the match could alter draft flexibility, particularly affecting Vitality's signature compositions.

Traders should monitor team announcements regarding player health or last-minute substitutions up to the 23 May fixture. The settlement window extends to 24 May at 21:00 UTC, providing a full day buffer for delayed matches. Fixture cancellations remain rare in LEC playoffs, but technical issues or unforeseen circumstances would trigger the 50-50 resolution clause, making the true risk profile dependent on operational reliability rather than competitive outcome alone.

Methodology

This page compares LoL: Team Vitality vs Movistar KOI (BO5) - LEC Playoffs specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.