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Cleveland Guardians vs. Seattle Mariners
Prediction market · Polymarket
Overview
In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 28 at 9:40PM ET: This market will resolve to "Cleveland Guardians" if the Cleveland Guardians 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.
Ticker
mlb-cle-sea-2026-03-28
Volume
484.0K
24h volume
476.5K
1w volume
484.0K
Open interest
332.5K
Liquidity
—
Start
Mar 25, 2026
End
Apr 5, 2026
Status
Closed
Access
Restricted
Created
Mar 29, 2026
Resolution source
https://www.mlb.com/
Event ID
305281
Slug
mlb-cle-sea-2026-03-28
Markets
4
Raw event data
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"slug": "mlb-cle-sea-2026-03-28",
"title": "Cleveland Guardians vs. Seattle Mariners",
"description": "In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 28 at 9:40PM ET:\n\nThis market will resolve to \"Cleveland Guardians\" if the Cleveland Guardians win the game.\n\nThis market will resolve to \"Seattle Mariners\" if the Seattle Mariners win the game.\n\nIf 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.\n\nThe 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.",
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"endDate": "2026-04-05T01:40:00Z",
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"active": true,
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"description": "In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 28 at 9:40 PM ET:\n\nThis market will resolve to \"Seattle Mariners\" if the Seattle Mariners win the game by 2 or more runs.\n\nOtherwise, this market will resolve to \"Cleveland Guardians\". If the game ends in a tie, this market will resolve to \"Cleveland Guardians\".\n\nIf 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.\n\nTo 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.\n\nThe 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.",
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"description": "In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 28 at 9:40 PM ET:\n\nThis market will resolve to \"Over\" if the Cleveland Guardians and Seattle Mariners combine to score 8 or more runs in this game.\n\nIf the combined total is less than 8, this market will resolve to \"Under\".\n\nIf 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.\n\nTo 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.\n\nThe 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.",
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"outcomePrices": "[\"1\", \"0\"]",
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"updatedAt": "2026-03-29T07:02:07.112572Z",
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"question": "NRFI: Cleveland Guardians vs. Seattle Mariners",
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"description": "In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 28 at 9:40 PM ET:\n\nThis market will resolve to \"Yes\" if no runs are scored in the 1st inning by either the Cleveland Guardians or Seattle Mariners.\n\nThis market will resolve to \"No\" if at least one run is scored in the 1st inning by either team.\n\nIf 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.\n\nTo 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.\n\nThe 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.",
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"description": "In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 28 at 9:40PM ET:\n\nThis market will resolve to \"Cleveland Guardians\" if the Cleveland Guardians win the game.\n\nThis market will resolve to \"Seattle Mariners\" if the Seattle Mariners win the game.\n\nIf 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.\n\nThe 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.",
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"context_description": "With the series tied 1-1 entering Saturday's matchup at T-Mobile Park, trader sentiment hinges on Guardians LHP Joey Cantillo facing Mariners RHP Bryan Woo, whose control and 3.21 career ERA provide Seattle a pitching edge in the pitcher-friendly confines. Cleveland stole the opener 6-4 behind rookie Chase DeLauter's two career homers despite ace Tanner Bibee's early exit with day-to-day right shoulder inflammation, while Seattle bounced back 5-1 Friday via George Kirby's dominance and Luke Raley's homer. Key absences include Mariners SS J.P. Crawford (shoulder, 10-day IL), SP Bryce Miller (oblique IL), and reliever Carlos Vargas (lat IL), thinning Seattle's lineup and bullpen amid Guardians' own IL arms like Hunter Gaddis (forearm). Home-field rest advantage and mild 53°F weather tilt slightly toward Mariners momentum.",
"context_requires_regen": false,
"context_updated_at": "2026-03-29T07:49:37.930Z"
}
}- Cleveland Guardians vs. Seattle MarinersVol 336.7KLiq —End Apr 5, 2026Closed
- Cleveland Guardians vs. Seattle Mariners: O/U 7.5Vol 8.9KLiq 0End Mar 29, 2026Closed
- NRFI: Cleveland Guardians vs. Seattle MarinersVol 2.2KLiq —End Apr 5, 2026Closed
- Spread: Seattle Mariners (-1.5)Vol 136.2KLiq 0End Mar 29, 2026Closed