MLB All-Star Game

Platform comparison

Market context

The American League and National League face off tonight at Citizens Bank Park in Philadelphia for the 2026 MLB All-Star Game, with the National League favoured by bookmakers due to home-field advantage and roster depth[7]. While the crowd-implied probability on the prediction market sits at 46% for an American League win, this diverges meaningfully from traditional sportsbook lines where the NL holds a -135 to -142 moneyline, implying roughly a 57–58% chance of victory[1][3]. Analyst consensus across major outlets also leans National League, citing superior pitching depth and the hitter-friendly venue as key drivers, creating a notable gap between the 46% prediction-market price and the 57%+ sportsbook consensus[4][7].

Historically, the American League has dominated this fixture, winning 47 of the 93 games played since 1933, though the National League has won the last two editions including the 2025 contest in Atlanta[11][12]. This recent NL momentum, combined with Shohei Ohtani’s presence as a potential MVP candidate, has shifted betting sentiment despite the AL’s long-term statistical dominance[11]. Traders should monitor the final starting pitcher announcements and any late roster changes, as the hometown starter for Philadelphia could significantly influence the game’s run total and winner[7]. The over/under is set at 7.5 runs, with the over slightly favoured, suggesting expectations for an offensive showcase that could swing the outcome if the AL capitalises on the ballpark’s dimensions[1][3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews MLB All-Star Game across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi vs Polymarket, which mirrors the Polymarket order book at 0% fees.

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.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.