Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
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 PolyGram.
Market context
Olympiacos B.C. and Fenerbahçe met in a EuroLeague play-off game on 22 May, with Olympiacos winning 79-61. That result explains why the market has effectively been priced as a near-certainty: the current crowd-implied 100% Yes reflects a completed match rather than a live contest. On platforms that quote in different formats, the same outcome would appear as a near-certain decimal price on Betfair, a high implied probability on Polymarket, and a heavily skewed Yes side on Smarkets, though the headline number can differ once commission or fees are applied.
For historical framing, Olympiacos and Fenerbahçe are familiar EuroLeague opponents, and their recent head-to-heads have tended to be competitive, including tighter regular-season meetings and occasional overtime games. That matters for reading pre-match prices on comparable markets, because basketball favourites can shorten quickly once team news confirms full-strength line-ups, but the gap between a statistical favourite and a guaranteed result is always larger than the market headline suggests. In this case, the settled score removes any remaining uncertainty.
The main catalysts traders would normally watch on a live or pending market are official line-up confirmation, injury updates, venue and tip-off changes, and any postponement or cancellation notice from EuroLeague. For platform comparison, Polymarket typically shows a direct yes/no probability, while Kalshi-style contracts and Betfair exchange prices are easier to translate into percentage terms but still move with liquidity and fees; Smarkets adds commission, and account access plus KYC can differ by jurisdiction. Here, none of those moving parts remain material because the game has already been completed.
Methodology
We read Olympiacos B.C. vs. Fenerbahce from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.
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
- 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.
- 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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