Counter-Strike: 100 Thieves vs 1WIN (BO3) - Esports World Cup Open Qualifier Play-Ins

Platform comparison

Market context

100 Thieves’ BO3 against 1WIN in the Esports World Cup Open Qualifier Play-Ins is the underlying event here, and a **YES** share pays out if 100 Thieves win the match, while a **NO** share pays out if 1WIN do. In prediction-market terms, the crowd-implied probability of 100% YES means the market is pricing the match as a near-certain 100 Thieves win, which is unusual for a best-of-three because the format still leaves room for map volatility and an upset.[1][4]

For context, 100 Thieves were listed with a stacked international roster and recent qualifier wins, while 1WIN have shown more uneven form, including both upset potential and losses to other sides in the same event cycle.[1] Comparable open-qualifier markets often move sharply when a strong roster is confirmed in the bracket or when a lower-ranked team has already beaten a notable opponent, so the current pricing should be read as a snapshot of confidence rather than a guarantee of match control.[1][16] The broader tournament format also matters: the Open Qualifier runs as a short, best-of-three play-in stage where only the top teams advance, increasing the importance of each single series.[3]

The main catalysts to watch are straightforward: whether the match is played as scheduled, whether there is a late bracket change or default, and whether either team is forced into schedule compression by other ongoing fixtures.[2][3] Live schedule listings on esports coverage sites still show the match in the August 9 programme, but timings in these events can slip if earlier BO3s run long, so settlement depends on the actual match being started and completed within the market’s window.[2][6] The market also uses a fallback 50-50 resolution if the match is cancelled, tied, or delayed too far without a winner, so traders are not only betting on who is stronger, but also on event completion.[1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Market UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

UK Frequently Asked Questions

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.