Washington Nationals vs. Baltimore Orioles

Platform comparison

Market context

The Washington Nationals defeated the Baltimore Orioles 6–4 in their Sunday 28 June matchup at Oriole Park, with Luis García Jr. homering twice and driving in five runs to secure the victory[2][8]. This result explains the current 100% YES crowd-implied probability on Polymarket for the Nationals winning, as the game has already been completed and the outcome is final[2]. The contract, settled on Polygon using USDC and conditional tokens, now reflects a resolved event rather than a speculative future, with on-chain mechanics ensuring immediate settlement once the official final statistics are confirmed[2].

Historically, 100% probabilities in MLB prediction markets appear only after games conclude, mirroring cases where late-inning scores or official confirmations lock in outcomes before settlement windows close[1]. Comparable instances from the 2025 and 2026 seasons show that markets resolving to 100% for a specific team invariably follow a confirmed win, with no room for ties or postponements once the final score is recorded[1]. This pattern frames the current probability not as a forecast but as a post-event confirmation, where the on-chain price simply mirrors the settled result rather than predicting an uncertain future[2].

Traders should monitor the official final statistics release from MLB and the settlement confirmation timestamp on Polymarket, as these are the primary dependencies for contract closure[2]. Recent coverage from ESPN confirms the 6–4 final score and García Jr.'s performance, providing the authoritative data needed for resolution[2]. No further announcements or schedule changes are relevant, as the game has ended and the settlement window, ending 5 July 2026, now serves only to process the final on-chain settlement[2]. The USDC balance and conditional token redemption will proceed automatically once the official stats are verified, with no manual intervention required[2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Washington Nationals vs. Baltimore Orioles across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.