LoL: GIANTX vs SK Gaming (BO3) - LEC Regular Season

Platform comparison

Market context

GIANTX and SK Gaming meet in a best-of-three LEC regular-season series, and the market’s 60% YES price implies GIANTX are favoured, but not decisively so. Recent head-to-head data leans towards SK Gaming overall, with SK winning 3 of the last 4 meetings cited in archived series histories, although GIANTX took the more recent 2026 spring match 2-0 and also won the February 2026 meeting[1][2][3][6]. On Polymarket, that 60% is a direct implied probability; by contrast, Betfair and Smarkets would typically show decimal odds or lay/back prices, so the same view may appear as a narrower trading edge once fees and spread are included. Polymarket’s settlement is also binary here, whereas exchange-style books can expose liquidity and commission differences more visibly.

Comparable meetings matter because this pairing has often been decided cleanly rather than going the distance, and the recent split between teams is sharper than the longer-run head-to-head suggests[1][6][14]. SK’s historical edge is old enough that traders should weight it less than current roster form and patch context, especially in a BO3 where adaptation across games can matter more than in a single map[1][4][16].

The main catalyst is whether the scheduled LEC slot holds and whether line-ups are unchanged, because any late roster, broadcast, or schedule adjustment can move an esports price quickly before map one starts[5][7]. For this market, the key practical difference across platforms is execution: Polymarket’s price is an implied probability, while Betfair and Smarkets charge commission on net winnings and may require stronger KYC, which can affect who can enter or exit quickly on a match-day move. If the series is delayed beyond the seven-day settlement window or not played as scheduled, the market can resolve 50-50 rather than to either side.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares LoL: GIANTX vs SK Gaming (BO3) - LEC Regular Season 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 Kalshi 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

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

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.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi 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.