Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Sport Prediction Pick polygram.ink |
10% | 90% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Sport Prediction → |
Polymarket polymarket.com |
10% | 90% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Sport Prediction → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Sport Prediction → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Sport Prediction → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Sport Prediction → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Sport Prediction.
Active sub-markets
| Map 2 Rounds Handicap: Alpha Dominion Nation (-9.5) vs Alpha Gaming (+9.5) | 10% Alpha Dominion Nation | 90% Alpha Gaming |
| Map 2 Rounds Handicap: Alpha Gaming (-3.5) vs Alpha Dominion Nation (+3.5) | 10% Alpha Gaming | 90% Alpha Dominion Nation |
| Map 2 Rounds Handicap: Alpha Gaming (-6.5) vs Alpha Dominion Nation (+6.5) | 10% Alpha Gaming | 90% Alpha Dominion Nation |
| Map 2 Total Rounds: Over/Under 24.5 | 10% Over | 90% Under |
| Map 1 Total Rounds: Over/Under 24.5 | 90% Over | 10% Under |
| Map 1 Rounds Handicap: Alpha Dominion Nation (-3.5) vs Alpha Gaming (+3.5) | 10% Alpha Dominion Nation | 90% Alpha Gaming |
Market context
Alpha Dominion Nation and Alpha Gaming face off in a United21 Season 51 Group C best-of-three decider, an online European CS2 clash between lower-tier academy squads scheduled for 08:00 UTC on 24 June. Both teams entered the group with identical 1-1 records after securing walkover victories and 2-0 map wins against CHAOS, positioning them near the top of early standings[1]. The series hinges on map-specific execution, particularly on Inferno, where roster stability and adaptation to recent patch changes will likely determine the outcome[1].
Historical precedents in C-tier academy brackets show that when teams share identical group records and face similar opponents, the 50-50 crowd-implied probability often reflects genuine uncertainty rather than a bias toward one side[1]. In comparable United21 matches from this season, teams with world rankings within one point of each other—such as Kosovo’s 107 and Denmark’s 106—have produced evenly contested series where the deciding map frequently went to overtime[4][5]. This pattern suggests the current probability is a rational assessment of form rather than an overreaction to external noise.
Traders should monitor live score updates for the first map, as a decisive win could shift momentum before the decider begins[6]. Key catalysts include any roster changes announced by either team within the next 24 hours, as academy squads often rotate players based on practice form[1]. Additionally, watch for patch-related adjustments; recent CS2 updates have altered map dynamics, and teams failing to adapt quickly have lost series despite strong pre-match records[1]. No major coaching changes have been reported, but the absence of a confirmed head coach for either side remains a variable to track[2].
Methodology
We track Counter-Strike: Alpha Dominion Nation vs Alpha Gaming (BO3) - United21 Group C 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
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- Where can I trade this market with the lowest fees?
- On Sport Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does it cost to trade on Sport Prediction?
- Zero. Sport Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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