Chicago White Sox vs. San Francisco Giants

Platform comparison

Active sub-markets

Market context

The Chicago White Sox travel to San Francisco on 22 May for a regular-season matchup against the Giants, with first pitch scheduled for 10:15 PM ET. This market has attracted sufficient liquidity to reach a 100% implied probability for a White Sox victory, suggesting either sharp consensus on roster strength, recent form, or concentrated backing from early depositors seeking to establish positions before the settlement window closes on 30 May.

Historical precedent shows that MLB games between these franchises rarely sustain extreme probability skew unless one team enters with a documented injury crisis or the other has established a dominant recent record. The White Sox finished 2024 with a 41–121 record, the worst in baseball, whilst the Giants posted 80–82. Current season performance through late May will be the primary driver of any shift from the present 100% reading. Comparable markets on weak teams playing stronger opponents typically compress towards 65–75% by game time, suggesting the current probability may reflect either incomplete information among depositors or early-mover advantage from traders with access to updated roster data.

Traders monitoring this market should track lineup announcements and pitching assignments released 24 hours before game time, as these directly influence win probability models. Recent Giants injury reports and White Sox call-ups from Triple-A will affect book depth. Payment friction—particularly deposit delays via Klarna or SEPA transfers—may suppress late-arriving liquidity, potentially leaving the 100% probability intact if no fresh capital enters the market between now and settlement.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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.

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'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 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.