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

Platform comparison

Active sub-markets

Market context

Team Vitality and Movistar KOI will contest the upper bracket semifinal of the 2026 LEC Playoffs on 23 May, with the winner advancing directly to the grand final. The 9% implied probability on Polymarket reflects Vitality as heavy favourites, though the decimal odds representation (roughly 11.0 on Kalshi's equivalent pricing) reveals how different platforms frame the same conviction. Betfair's traditional fractional odds format would display this as 10/1 against KOI, a notation familiar to European punters but absent from most US-regulated venues. The settlement window extends to 24 May at 21:00 UTC, allowing roughly 34 hours for match completion—a buffer that matters given LEC scheduling occasionally slips by hours rather than days.

Historical context matters here: Vitality have finished first in regular season play for three consecutive splits and maintain a 67% head-to-head record against KOI since 2024. KOI's path to the upper bracket semifinal required wins over lower-seeded opponents, whereas Vitality received a bye. The gap in seeding typically correlates with roster stability and scrim performance, though LEC playoffs have produced upsets—Rogue beat G2 as underdogs in 2023 when meta shifts favoured their draft pool. KYC requirements differ across platforms: Polymarket uses Polygon-based settlement with lighter identity verification than Kalshi's full US regulatory compliance, which may affect liquidity depth on this specific match.

Traders should monitor roster announcements through 22 May, particularly any last-minute substitutions or technical issues during the draft phase. LEC broadcast schedules occasionally shift due to production constraints, though the 11:00 AM ET slot is standard for playoff semifinals. Recent patch notes (typically released Wednesdays) can reshape champion viability; a sudden nerf to Vitality's primary carry champion could narrow the probability gap, though such swings rarely exceed 3–4 percentage points in established matchups.

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

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.

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.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.