Counter-Strike: Legacy vs GamerLegion (BO3) - IEM Atlanta Playoffs

Platform comparison

Active sub-markets

Market context

Legacy and GamerLegion are due to meet in the IEM Atlanta play-offs semi-final, a best-of-three that, on paper, should have produced an active price rather than a 0% yes line. The crowd-implied probability appears detached from the live event state rather than the underlying teams: Strafe lists Legacy on a five-match winning run and GamerLegion on four wins from five, with both sides clustered in the mid-teens of the rankings and user voting narrowly favouring Legacy. For a systematic trader, that makes the obvious first check whether the market is stale, mis-set, or awaiting settlement input from the match feed rather than reflecting form.

Comparable CS2 semi-finals usually reprice sharply once the veto, server confirmation and first map start are published, because the main risks are operational rather than analytical: schedule slips, broadcast delays, or a match page changing status after the listed start time. Dust2.us currently shows the fixture with team rankings and no map list yet, which is the sort of incomplete pre-match metadata that often leaves automated models cautious until the lobby and veto are confirmed. Programmatically, the key flags are whether ESL has locked the fixture on its Atlanta tournament page, whether the BO3 is actually underway, and whether the result enters the official bracket feed before the settlement window closes at 23:15 UTC.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Counter-Strike: Legacy vs GamerLegion (BO3) - IEM Atlanta Playoffs on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.