TOTAL VOLUME:

$134.1b

24H VOL:

$141,541,542

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,440,096,988

406,065

Markets across

30,522

events

MATCHED EVENTS:

2,692

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Boston Red Sox vs. Athletics
polymarket
kalshi
predict
opinion

Who will win Boston Red Sox vs Athletics?

Volume:
$10,526,435

Boston

 - Kalshi

Boston - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jul 28, 2026

Closed: Jul 28, 12:19 AM EST

kalshi

Kalshi

View
Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Boston

View
100%
Yes 100¢No 0¢
100¢
N/A
$6,178,073
N/A
N/A
$3,413,819
Settled
Yes
polymarket

Boston Red Sox vs. Athletics

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$698,402
N/A
N/A
N/A
Settled
Yes
predict

Boston Red Sox vs. Athletics

View
99%
Yes 99¢No 1¢
—
$12,422
$28,141
N/A
N/A
N/A
Settled
No
kalshi

A's

View
0%
Yes 0¢No 100¢
100¢
N/A
$3,135,612
N/A
N/A
$1,980,188
Settled
No
opinion

Boston Red Sox vs Athletics

View
N/A
N/A
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Spread -1.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$62,623
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 4.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$3,733
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$1,794
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$1,665
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 9.5

View
0%
Yes 0¢No 100¢
—
N/A
$255,097
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
Yes 0¢No 100¢
—
N/A
$57,271
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$55,931
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 8.5

View
0%
Yes 0¢No 100¢
—
N/A
$33,223
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 7.5

View
0%
Yes 0¢No 100¢
—
N/A
$5,419
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$5,351
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 6.5

View
0%
Yes 0¢No 100¢
—
N/A
$2,590
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
Yes 0¢No 100¢
—
N/A
$995
N/A
N/A
N/A
Settled
Yes
polymarket

Extra Innings

View
0%
Yes 0¢No 100¢
—
N/A
$146
N/A
N/A
N/A
Settled
No
polymarket

1st 5 Innings Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$105
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 3.5

View
0%
Yes 0¢No 100¢
—
N/A
$100
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 6.5

View
0%
Yes 0¢No 100¢
—
N/A
$100
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -3.5

View
0%
Yes 0¢No 100¢
—
N/A
$35
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$29
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 2.5

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 4.5

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 25 of 26

Intro

This market tracks whether the total combined runs scored by both teams in the upcoming MLB game between the Boston Red Sox and the Athletics will be over or under 4.5 runs. The current consensus probability for the leading outcome is 100.0%. Data is aggregated from Polymarket, Kalshi, Predict, and Opinion, with resolution based on MLB.com. Watch for the official game result on August 4, 2026, which will determine the market outcome.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All platforms use the same core logic: game winner determines the match outcome, first inning runs determine the inning-specific market, with standardized handling for postponements, cancellations, and ties.Primary resolution logic: MLB.com

Core resolution logic:

  • If Boston Red Sox win the game, all match winner markets resolve to Boston Red Sox
  • If Athletics win the game, all match winner markets resolve to Athletics
  • If no runs are scored in the first inning, the 'Will there be a run scored in the first inning?' market resolves to No
  • If at least one run is scored in the first inning by either team, the market resolves to Yes
  • Postponed games keep markets open until played; canceled games or ties resolve 50-50

Edge cases & clarifications:

  • Postponement: Markets remain open until the game is rescheduled and completed. The resolution follows the rules above once the makeup game is played.
  • Cancellation: If the game is officially canceled with no makeup date, all markets resolve 50-50.
  • Tie: If the game ends in a tie (which is extremely rare in MLB but possible through regulation or after extra innings if both teams agree to it), all markets resolve 50-50.
Timing: Resolution occurs immediately after the official game result is published on MLB.com, typically within 24 hours of the game's conclusion. If MLB.com does not publish results within 24 hours, credible reporting may be used as a secondary source.Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

In the upcoming MLB game between the Boston Red Sox and Athletics, scheduled for July 27 at 9:40PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game. This market will resolve to "Athletics" if the Athletics 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.

Kalshi

The market resolves based on the winner of the Boston vs A's professional baseball game scheduled for July 27, 2026, at 9:40 PM EDT. If the game is postponed or delayed, the market remains open and closes after the rescheduled game finishes, provided it occurs within two days of the original date. If the game is cancelled or rescheduled to more than two days after the original date, the market resolves to a fair price. Kalshi is not affiliated with the Governing League, and all trademarks belong to their respective owners.

Predict

In the upcoming MLB game between the Boston Red Sox and Athletics, scheduled for July 27 at 9:40PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game. This market will resolve to "Athletics" if the Athletics 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.

Opinion

In the upcoming MLB game, scheduled for 2026-07-28 01:40 UTC: If the Boston Red Sox win, the market will resolve to "Boston Red Sox". If the Athletics win, the market will resolve to "Athletics". The result will be determined based on the final score including any extra innings. 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 officially ends in a tie, this market will resolve 50-50. Resolution Source: https://www.mlb.com/ Note: Opinion will resolve strictly based on the first officially published result from the designated source. Any subsequent revisions will not affect this resolution.

Frequently asked questions

The dashboard for the Red Sox vs. Athletics matchup market aggregates real-time data from multiple platforms, showing how traders price the chances of each team winning. It displays total volume of $10,526,435 and 24-hour volume of $9,701,750, letting you see where consensus lies and how sentiment shifts over time. This view lets you compare activity across venues and spot emerging trends before the game.

On Polymarket and Opinion, prices can diverge because of differing user bases, liquidity levels, and trading activity. Polymarket and Opinion can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. For instance, if one platform has deeper volume or more active traders, its prices may reflect sharper insights or quicker reactions to news. Additionally, each venue’s fee structure and market design can influence how traders place bets, causing the odds to shift independently.