TOTAL VOLUME:

$134b

24H VOL:

$107,351,958

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,416,970,024

400,720

Markets across

30,097

events

MATCHED EVENTS:

2,633

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Insights
Indices
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
Chicago Cubs vs. Seattle Mariners
polymarket
predict

Who will win Chicago Cubs vs Seattle Mariners?

Volume:
$620,809

O/U 7.5

 - Polymarket

O/U 7.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 23, 2026

Closed: Aug 22, 10:08 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

O/U 7.5

View
100%
48%
Yes 100¢No 0¢
0.1¢
N/A
$190,400
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 8.5

View
100%
56%
Yes 100¢No 0¢
0.1¢
N/A
$24,440
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 6.5

View
100%
36%
Yes 100¢No 0¢
0.1¢
N/A
$19,149
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$3,322
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

View
100%
56%
Yes 100¢No 0¢
0.1¢
N/A
$746
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 4.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$36
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 2.5

View
100%
29%
Yes 100¢No 0¢
0.1¢
N/A
$10
N/A
N/A
N/A
Settled
Yes
predict

Chicago Cubs vs. Seattle Mariners

View
81%
33%
Yes 81¢No 19¢
—
$1,822
$36,230
N/A
N/A
N/A
Settled
No
polymarket

Chicago Cubs vs. Seattle Mariners

View
0%
47%
Yes 0¢No 100¢
—
N/A
$316,790
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 4.5

View
0%
46%
Yes 0¢No 100¢
—
N/A
$10,688
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
0%
36%
Yes 0¢No 100¢
—
N/A
$8,146
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
26%
Yes 0¢No 100¢
—
N/A
$5,538
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
0%
34%
Yes 0¢No 100¢
—
N/A
$3,419
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
24%
Yes 0¢No 100¢
—
N/A
$1,755
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 3.5

View
0%
59%
Yes 0¢No 100¢
—
N/A
$85
N/A
N/A
N/A
Settled
Yes
polymarket

Extra Innings

View
0%
7%
Yes 0¢No 100¢
—
N/A
$19
N/A
N/A
N/A
Settled
No
polymarket

1st 5 Innings O/U 5.5

View
0%
34%
Yes 0¢No 100¢
—
N/A
$15
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
0%
34%
Yes 0¢No 100¢
—
N/A
$12
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 6.5

View
0%
24%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 9.5

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

1st 5 Innings Spread -1.5

View
0%
24%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 21

Description

This group of markets focuses on the upcoming MLB game between the Chicago Cubs and Seattle Mariners scheduled for August 22 at 7:15 PM ET. The markets cover the outcome of the game and whether any runs will be scored in the first inning.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All platforms use the same resolution criteria based on official MLB statistics or credible reporting consensus for determining the game outcome and first-inning scoring.Primary resolution logic: Official MLB statistics or credible reporting consensus

Core resolution logic:

  • The market resolves to the winning team if one team wins the game
  • The market resolves 50-50 if the game is canceled with no make-up date or ends in a tie
  • The first-inning run market resolves to Yes if at least one run is scored in the first inning by either team, otherwise No
  • If the game is postponed, markets remain open until the game is completed

Edge cases & clarifications:

  • Postponed Game: Markets remain open until the game is completed as a make-up game
  • Canceled Game: Markets resolve 50-50 if the game is canceled entirely with no make-up game
  • Tie Game: Markets resolve 50-50 if the game ends in a tie
Timing: Resolution occurs based on official MLB statistics within 24 hours after the game concludes, or via credible reporting consensus if official statistics are delayedOur 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 Chicago Cubs and Seattle Mariners, scheduled for August 22 at 7:15PM ET: This market will resolve to "Chicago Cubs" if the Chicago Cubs win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners 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.

Predict

In the upcoming MLB game between the Chicago Cubs and Seattle Mariners, scheduled for August 22 at 7:15PM ET: This market will resolve to "Chicago Cubs" if the Chicago Cubs win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners 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.

Frequently asked questions

Injuries to key players, weather delays, or changes in starting pitchers can all shift this market as they affect expected scoring or game dynamics. Strong pre-game betting trends on either side may also influence prices, especially if one team gains sudden momentum or faces unexpected lineup adjustments before the first pitch.