LoL: KaBuM! Ilha das Lendas vs Vivo Keyd Stars Academy (BO5) - Circuito Desafiante Playoffs

Platform comparison

Active sub-markets

Market context

KaBuM! Ilha das Lendas are due to meet Vivo Keyd Stars Academy in a best-of-five upper-bracket final in the Circuito Desafiante playoffs, with the market currently priced at 0% YES. That sits awkwardly against the team records available from the split: Leaguepedia shows KaBuM! at 9-0 in the season table and Vivo Keyd Stars Academy at 4-5, while Sofascore and other listings place the playoff series on 26 May. For comparison purposes, Kalshi displays prices as implied probabilities and settles on the named team winning the match, whereas Betfair and Smarkets would show decimal odds and usually allow traders to infer the same view through back-and-forth price moves; fee treatment also differs, with exchange-style commissions on Betfair/Smarkets versus market pricing on Kalshi, and KYC access remains more restrictive on the US venue than on the UK-facing books.

The main things to watch are whether the fixture time changes again, whether either side reports roster or substitute issues, and how the playoff bracket is updated if there is a postponement. A separate Kalshi map-winner market on the same pairing was originally tied to 20 May and later marked verified, which suggests the platform may have already had adjacent match-state information flowing through the event set. That kind of scheduling churn matters because prediction books do not all handle rescheduling the same way: Polymarket-style markets can react instantly to bracket confirmations, while exchange prices on Betfair or Smarkets tend to move more slowly but reveal depth more clearly. If the match is played as listed, the key dependency is simply whether the higher-seeded KaBuM! side can convert their stronger season position into a BO5 win against a Vivo Keyd Stars Academy roster that reached the playoffs but sat well behind in the standings.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares LoL: KaBuM! Ilha das Lendas vs Vivo Keyd Stars Academy (BO5) - Circuito Desafiante 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

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

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 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in 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.