San Francisco Giants vs. Boston Red Sox

MLB
San Francisco Giants
52-75
vs
21/08 23:10
Boston Red Sox
68-59
Game context

The Boston Red Sox (68-59) host the San Francisco Giants (52-75) at Fenway Park to open a three-game interleague series, with the Red Sox favored as home team against a club mired in last place in the NL West. Sonny Gray (15-3, 2.65 ERA) takes the ball for Boston against Logan Webb (8-7, 3.50 ERA), giving the Red Sox a clear edge in the probable-pitcher matchup. Boston’s offense has posted the sixth-best team batting average in MLB while the Giants sit at .247 and have lost eight consecutive road series. Multiple injuries on both rosters, including key Red Sox arms on the IL, add uncertainty, yet the Red Sox’ stronger overall form and home advantage shape current trader consensus around a Boston win. Rafael Devers’ return to Fenway after his 2025 trade to San Francisco adds a notable storyline.

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Moneyline
$10.2K Vol.
Spread
$743 Vol.
Total (O/U)
$30.1K Vol.
1st 5 Innings · Moneyline
$83 Vol.
1st 5 Innings · Spread
$6 Vol.
1st 5 Innings · Total (O/U)
$22 Vol.

In the upcoming MLB game between the San Francisco Giants and Boston Red Sox, scheduled for August 21 at 7:10PM ET:

This market will resolve to "San Francisco Giants" if the San Francisco Giants win the game.

This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game.

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, or ends in a tie, this market will resolve 50-50.

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.

Resolution Source: www.mlb.com

Odds & FAQ

What are the current odds for San Francisco Giants vs. Boston Red Sox?
1st 5 Innings O/U 2.5 leads the field at 70%, with O/U 6.5 next at 60%. A solid favorite - though every trade can reshuffle the board.
What do traders predict for San Francisco Giants vs. Boston Red Sox?
The market makes 1st 5 Innings O/U 2.5 the favorite at 70%. Implied probabilities come from real positions, and they move as traders digest new information.
When does the San Francisco Giants vs. Boston Red Sox market resolve?
The market runs until 28 Aug 2026 (8 days left), then settles according to Polymarket's published resolution rules for this event.
How much money is trading on San Francisco Giants vs. Boston Red Sox?
Traders have put $7.4M through this market so far - a solid gauge of how much real money backs these odds.
How can I trade San Francisco Giants vs. Boston Red Sox on Polymarket?
Track the live odds on this page, then open the market on Polymarket to take a position. Trade carefully - only stake what you can afford to lose.

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