What is the Giants vs. Red Sox 8.5-run prediction market?

It is a Polymarket market on whether the San Francisco Giants and Boston Red Sox will combine for more than 8.5 runs in their scheduled MLB game.

What does Over 8.5 mean in this market?

Over wins if the Giants and Red Sox score at least 9 total runs combined.

What does Under 8.5 mean?

Under wins if the two teams score 8 or fewer total runs.

When does the Giants vs. Red Sox market resolve?

The market resolves after the game is completed on August 21, 2026. If the game is postponed, it remains open until it is played.

What happens if the game is canceled?

If the game is canceled entirely and there is no make-up game, the market resolves 50-50 according to the exchange rules.

Part of: San Francisco Giants vs. Boston Red Sox

San Francisco Giants vs. Boston Red Sox: O/U 8.5

This Polymarket prediction market covers the San Francisco Giants vs. Boston Red Sox game on August 21, 2026, with a 8.5-run total. The market resolves to Over if both teams score 9 or more combined runs, or Under if they score 8 or fewer; one tracked smart money signal recently backed Under.

In the upcoming MLB game between the San Francisco Giants and Boston Red Sox, scheduled for August 21 at 7:10 PM ET: This market will resolve to "Over" if the San Francisco Giants and Boston Red Sox combine to score 9 or more runs in this game. If the combined total is less than 9, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

1 smart money signal detected, totaling $1,406.

Categories: Sports, Games, MLB, baseball

Notable Trades

Profitable serial bettor backs Under

A highly experienced serial trader with 5,892 resolved bets, a 72% win rate, and $1.18 million in profits is making a fresh Under position.

This bettor has won 72% of 5,892 resolved trades and is up $1.18 million.
They have traded across 500 events and 563 markets, indicating broad, sustained experience.
The $1,406 Under position was entered at 63¢, near the current 64¢ market price.

$1,406 on Under | Wallet win rate: 72%