Athletics vs. San Francisco Giants

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Active sub-markets

Market context

On 23 June at 9:45pm ET, the Athletics travel to Oracle Park to face the San Francisco Giants in a single MLB game where the winner is determined by the final score. The market currently prices the Athletics at a 22% implied probability of victory, positioning them as the clear underdog against the favoured Giants, who hold a 53% consensus win probability according to recent model projections[2]. Historical patterns in similar night games at Oracle Park show the home side often converting a 50–55% probability into a multi-run win, yet the Athletics’ 14–22 record to the under on the road this season introduces a contrarian angle that the market may be underweighting[3].

Traders should monitor the starting pitchers’ recent form and any late roster announcements, as the pitching matchup between Civale (5–3, 4.91 ERA) and Ray (5–6, 4.07 ERA) is pivotal to the outcome[4]. The game’s total runs line sits at 8.5, with models projecting 8.0 runs, suggesting the under holds value at 40.6% implied odds despite the market pricing it lower[2]. Recent betting trends indicate the Giants are 16–9 to the over as favourites, but the Athletics’ road under trend and the park’s 0.93 run factor create a value spot for the underdog if the game remains low-scoring[2][3]. No major weather disruptions are forecast, so the primary dependency remains the in-game execution of both bullpens.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Athletics vs. San Francisco Giants 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?

Who Will Win 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 Who Will Win?

Zero. Who Will Win routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win 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.