MLB All-Star Game

Platform comparison

Market context

The National League is favoured to win the 2026 MLB All-Star Game in Philadelphia, with bookmakers pricing them at -135 moneyline odds and prediction markets assigning roughly a 59% implied probability to their victory [2][3]. On Polymarket, however, the contract for the American League to win sits at 64% YES, a divergence from traditional sportsbooks that suggests on-chain traders are pricing in a specific upset scenario or reacting to late roster volatility [3]. This price reflects USDC shares on Polygon, where conditional tokens shift continuously as traders adjust positions based on new information before the July 14 settlement window closes.

Historically, the All-Star Game has been a volatile event for prediction markets, often defying pre-game favourites due to the short format and limited pitching rotations. In recent years, the American League has frequently outperformed its implied probability when the National League’s scheduled starter, Cristopher Sanchez, faces a potent AL lineup [5]. The current 64% probability for the American League aligns with past instances where the underdog capitalised on a single defensive error or a late-inning home run, making the contract a high-beta play on game-day randomness rather than pure team strength.

Traders must monitor the final roster confirmations and the outcome of the All-Star Ballot Phase 2, which remains open until noon ET on Thursday [1]. Any late injury to a key AL hitter or a change in the starting pitcher could drastically alter the conditional token pricing before the game begins. Additionally, the game total is set at 7.5 runs, meaning a high-scoring affair could favour the American League’s power hitters, while a low-scoring grind might favour the National League’s pitching depth [2][6].

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 Polymarket Scam?, 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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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.