TOTAL VOLUME:

$134.1b

24H VOL:

$133,388,117

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,436,095,462

405,232

Markets across

30,526

events

MATCHED EVENTS:

2,693

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
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Sports
Seattle Mariners vs. Cleveland Guardians
polymarket

Who will win Seattle Mariners vs Cleveland Guardians?

Volume:
$431,589

O/U 6.5

 - Polymarket

O/U 6.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 28, 2026

Closed: Jun 27, 7:10 PM EST

polymarket

Polymarket

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

O/U 6.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$20,393
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 5.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$10,142
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 3.5

100%
Yes 100¢No 0¢
0.9¢
N/A
$90
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -2.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$29
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 4.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$28
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 2.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$25
N/A
N/A
N/A
Settled
Yes
polymarket

Seattle Mariners vs. Cleveland Guardians

0%
Yes 0¢No 100¢
—
N/A
$286,595
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 7.5

0%
Yes 0¢No 100¢
—
N/A
$51,500
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

0%
Yes 0¢No 100¢
—
N/A
$29,548
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 8.5

0%
Yes 0¢No 100¢
—
N/A
$21,026
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

0%
Yes 0¢No 100¢
—
N/A
$5,768
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

0%
Yes 0¢No 100¢
—
N/A
$5,454
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

0%
Yes 0¢No 100¢
—
N/A
$650
N/A
N/A
N/A
Settled
No
polymarket

1st 5 Innings O/U 4.5

0%
Yes 0¢No 100¢
—
N/A
$152
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -3.5

0%
Yes 0¢No 100¢
—
N/A
$132
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 5.5

0%
Yes 0¢No 100¢
—
N/A
$22
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 6.5

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

Spread -4.5

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

1st 5 Innings Spread -2.5

0%
Yes 0¢No 100¢
—
N/A
$4
N/A
N/A
N/A
Settled
Yes
polymarket

Extra Innings

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

1st 5 Innings Spread -1.5

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

1st 5 Innings Spread -1.5

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 22

Description

In the upcoming MLB game between the Seattle Mariners and Cleveland Guardians, scheduled for June 27 at 7:10PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. This market will resolve to "Cleveland Guardians" if the Cleveland Guardians 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.

Polymarket

In the upcoming MLB game between the Seattle Mariners and Cleveland Guardians, scheduled for June 27 at 7:10PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. This market will resolve to "Cleveland Guardians" if the Cleveland Guardians 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

On Polymarket, the dashboard for the Mariners vs. Guardians matchup displays real-time odds, historical price movements, and trading volume. Traders can monitor current market sentiment reflected in the probability of each outcome, along with 24-hour volume of $430,305 showing recent activity. The interface tracks how odds shift as new information emerges, giving participants visibility into both the consensus forecast and the depth of trading interest in this matchup throughout the betting window.

Prediction market odds and traditional sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and manage risk, while prediction markets like this one aggregate trader beliefs through continuous price discovery. This market's odds represent what thousands of independent traders believe will happen, whereas sportsbooks incorporate margin and liability management. Comparing the two can reveal whether professional oddsmakers and decentralized traders align on the likely outcome, offering insight into consensus strength.

This market resolves around Jul 4, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will reflect what actually occurs during the game, with no ambiguity about which team wins. Traders holding shares in the correct outcome receive their payout once resolution is finalized, incentivizing accurate predictions throughout the trading window.

Key catalysts include roster changes, injury announcements, recent team performance, and head-to-head matchup history. Winning or losing streaks leading into the game often shift trader sentiment, as do weather conditions or venue factors that affect play. Breaking news about player availability or lineup decisions can trigger sharp price moves as traders reassess probabilities. Media coverage and expert commentary may also influence the crowd, causing the odds to drift as the game approaches and new information becomes available.