LoL: CTBC Flying Oyster vs GAM Esports (BO3) - LCP Group Stage

Platform comparison

Market context

CTBC Flying Oyster and GAM Esports are due to meet in a best-of-three LCP group-stage series, and the market’s 37% crowd-implied price for CFO is materially below recent third-party match forecasts. Strafe lists CTBC Flying Oyster at about 69.2% to win this specific July 31 matchup, while BO3’s pre-match model has the series leaning 2-1 or 2-0 towards CFO rather than GAM.[3][11] That gap matters because Polymarket-style markets quote a straight implied probability, whereas Kalshi and Betfair-style venues present contract prices or decimal odds that embed different fee mechanics, and Smarkets typically charges commission on net winnings rather than widening the spread in the same way; the practical comparison is therefore not just direction, but the all-in cost of expressing the same view. On the historical record, CFO have generally held the edge in this pairing, with recent matchup databases showing several wins for CTBC Flying Oyster against GAM across 2025-26, although GAM have taken individual series when the form line turned.[13][16]

For traders, the main catalysts are whether the match starts on time, whether the line-up is confirmed without last-minute substitutions, and whether the broader LCP schedule stays intact before the 17:30 UTC settlement window closes. Because this market resolves to 50-50 if the series is not played, delayed, or left without a winner beyond seven days, any platform difference in handling voids, partial play and completion rules is secondary to event confirmation itself. Esports results pages and live-score feeds have already published the fixture for 31 July, which usually means the final move comes from official broadcast start, vetoed draft line-ups, or a surprise schedule change rather than from long-run team strength alone.[3][7][9]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares LoL: CTBC Flying Oyster vs GAM Esports (BO3) - LCP Group Stage specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Alternative, 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

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Polymarket Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Polymarket Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.