Dota 2: Yellow Submarine vs Execration (BO3) - Games of the Future Group A

Platform comparison

Market context

Yellow Submarine and Execration are scheduled to meet in a best-of-three Group A match at the Games of the Future, with listings placing the start around 05:00 UTC on 31 July. That matters for market interpretation because the current crowd-implied **100% YES** price on Polymarket already assumes the match will be played and resolved normally, whereas on Betfair or Smarkets the same view would typically be expressed as a very short decimal price with exchange fees deducted from any profit.

The main historical frame is straightforward: when a Dota 2 match is publicly listed by multiple scoreboards and fixture trackers, prices tend to stay near certainty only if the pairing is effectively locked in and the market is trading the event itself rather than the winner. Here, third-party listings show the fixture as a live or upcoming Group A match, while some betting pages also flag postponement or cancellation language, which is worth separating from actual settlement rules. On Polymarket, a no-contest or unresolved delay can still send the market to 50-50; on exchange books, traders usually manage that risk through price and liquidity rather than a binary yes/no contract.

The catalysts are operational rather than tactical: official start confirmation, any delay from the tournament organiser, whether the series begins on schedule, and whether the full Bo3 is completed before the settlement window closes. A recent fixture listing from Strafe matches the same Group A pairing and timing, which supports the event’s existence but not the outcome. For platform comparison, Kalshi-style contracts usually emphasise clear event resolution and US-facing KYC constraints, while Betfair and Smarkets depend on exchange liquidity and account verification, so the same match can show different levels of accessibility and different effective pricing even when the underlying probability is identical.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Dota 2: Yellow Submarine vs Execration (BO3) - Games of the Future Group A 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 Robinhood Prediction Markets, 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). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

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.

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. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.