MLB All-Star Game

Platform comparison

Market context

The 2026 MLB All-Star Game kicks off tonight at Citizens Bank Park in Philadelphia, pitting the American League against the National League in a contest where the NL holds a modest edge. While the crowd-implied probability on the prediction market favours the American League at 46% YES, major sportsbooks consistently price the National League as the winner, with moneylines ranging from -115 to -142 across DraftKings, FanDuel, and bet365[2][4][5]. This divergence creates a notable arbitrage opportunity, as the prediction market’s 46% figure implies the AL is slightly favoured, whereas the analyst consensus and betting lines uniformly treat the NL as the modest favourite, often citing home-field energy and a hitter-friendly park as key drivers[6].

Historically, All-Star Games have been volatile, with the league holding home field advantage winning roughly 60% of the time since 2003, yet the AL has lost the last two straight editions, including a 5-3 defeat in 2025[6]. The current 46% probability for the AL suggests a potential bounce-back, but this contradicts the broader trend of NL dominance in recent years and the specific betting market weight placed on Philadelphia’s offensive environment[1][6]. Traders should monitor the final starting pitcher announcements and any late roster changes, as these factors heavily influence run-line pricing and moneyline shifts in this exhibition format[11].

Key catalysts include the official starting lineup confirmation and the in-game run total, currently set at 7.5 or 8 runs across major books[1][2]. The over is shaded slightly, reflecting the park’s reputation for favouring hitters, which could impact the game’s tempo and scoring potential[6]. With the settlement window closing after the game concludes on 14 July, any postponement will keep the market open, but a cancellation would force a 50-50 resolution[4]. The discrepancy between the 46% prediction market price and the -135 sportsbook line for the NL remains the primary focal point for cross-platform comparison.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets 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.