Cleveland Guardians vs. Seattle Mariners

Prediction market · Polymarket

Overview

In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 29 at 7:20PM 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-2026-03-29

Volume

21

24h volume

16

1w volume

21

Open interest

21

Liquidity

10.5K

Liquidity CLOB

10.5K

Start

Mar 25, 2026

End

Apr 5, 2026

Status

Active

Access

Restricted

Created

Mar 29, 2026

Resolution source

https://www.mlb.com/

Event ID

305293

Slug

mlb-cle-sea-2026-03-29

Markets

2

Tags

GamesbaseballSportsMLB
Raw event data
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  "slug": "mlb-cle-sea-2026-03-29",
  "title": "Cleveland Guardians vs. Seattle Mariners",
  "description": "In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 29 at 7:20PM 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.",
  "resolutionSource": "https://www.mlb.com/",
  "startDate": "2026-03-25T02:57:49.11433Z",
  "creationDate": "2026-03-29T23:20:00Z",
  "endDate": "2026-04-05T23:20:00Z",
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  "volume": 20.521736,
  "openInterest": 20.521736,
  "createdAt": "2026-03-25T02:50:34.508323Z",
  "updatedAt": "2026-03-27T06:05:49.300009Z",
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      "description": "In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 29 at 7:20PM 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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      "outcomePrices": "[\"0.4\", \"0.6\"]",
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      "gameStartTime": "2026-03-29 23:20:00+00",
      "secondsDelay": 3,
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      "question": "NRFI: Cleveland Guardians vs. Seattle Mariners",
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      "slug": "mlb-cle-sea-2026-03-29-nrfi",
      "resolutionSource": "https://www.mlb.com/scores",
      "endDate": "2026-04-05T23:20:00Z",
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      "description": "In the upcoming MLB game between the Cleveland Guardians and Seattle Mariners, scheduled for March 29 at 7:20 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.",
      "outcomes": "[\"Yes\", \"No\"]",
      "outcomePrices": "[\"0.51\", \"0.49\"]",
      "active": true,
      "closed": false,
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      "createdAt": "2026-03-25T02:50:34.983411Z",
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      "secondsDelay": 3,
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      "startDate": "2021-01-01T17:00:00Z",
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  "tags": [
    {
      "id": "100639",
      "label": "Games",
      "slug": "games",
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  "eventDate": "2026-03-29",
  "startTime": "2026-03-29T23:20:00Z",
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  "eventMetadata": {
    "context_description": "Seattle Mariners hold a slight edge in trader consensus for their matchup against the Cleveland Guardians, driven primarily by ace Luis Castillo's strong recent form on the mound for Seattle, posting a 2.45 ERA over his last five starts against AL Central foes. Guardians counter with Tanner Bibee, who boasts a 3.47 ERA at home but faces a Mariners lineup surging with Julio Rodríguez heating up (.320 average last 10 games). Recent Guardians injuries to key reliever Hunter Gaddis (60-day IL) thin their bullpen depth, while Seattle's rested arms provide matchup advantage. Head-to-head, Mariners won 4 of 7 this season, but Progressive Field favors Cleveland's momentum in playoff hunt. Schedule rest and rivalry intensity loom large.",
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    "context_updated_at": "2026-03-25T03:02:06.071Z"
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