MLB: 4-homer game in 2026?

This market will resolve to “Yes” if any player hits four or more home runs in a single game during the 2026 MLB regular season. Otherwise, this market will resolve to “No”. Four home runs by a player in any length regular season game will count toward resolution. Inside-the-park home runs will count toward a “Yes” resolution for this market. If the 2026 MLB regular season is cancelled, postponed after October 11, 2026, 11:59 PM ET, or if it cannot be determined if a player hit four home runs in a single game within that timeframe, this market will resolve to “No”. The resolution source for this market will be official information from the MLB; however, a consensus of credible reporting may also be used.

How trading works

Polymarket uses a central limit order book (CLOB) model — you can buy or sell shares of any outcome at the current market price, or place limit orders at your target price. All positions are settled in USDC when the market resolves.

Resolution

Markets resolve through UMA's Optimistic Oracle. After the market closes, a proposer submits a resolution, followed by a 2-hour dispute window. If no dispute is raised, the resolution is accepted. Disputed markets go to UMA token holder vote.