Use the internal polymarket geolocation service.

poly_geo

Improved notification preferences and types.

notifications_v2

funkit_deposit

funkit_withdraw

authenticated_book_ws

Improved in-game view for sports markets.

mobile_sports_overlay_v2

async_order_submission

Enable updates from the sports websocket.

sports_websocket

Show/hide language selector in navigation

language_selector

Auto-detect and redirect based on browser language

auto_locale_detection

In the upcoming MLB game, scheduled for September 9 at 9:40PM ET:
If the St. Louis Cardinals win, the market will resolve to “Cardinals”.
If the Seattle Mariners win, the market will resolve to “Mariners”.
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, this market will resolve 50-50.
To 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.

Cardinals vs. Mariners

In the upcoming MLB game, scheduled for September 9 at 9:40 PM ET:

This market will resolve to "Yes" if the Mariners win the game by 2 or more runs.

Otherwise, this market will resolve to "No".

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, this market will resolve 50–50.

To 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.

This market will resolve according to the official final score published on MLB.com regardless of the number of innings completed.

Spread -1.5

In the upcoming MLB game, scheduled for September 9 at 9:40 PM ET:

This market will resolve to "Over" if the Cardinals and Mariners combine to score 8 or more runs in this game.

If the combined total is less than 8, this market will resolve to "Under".

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, this market will resolve 50–50.

To 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.

This market will resolve according to the official final score published on MLB.com regardless of the number of innings completed.

O/U 7.5

In the upcoming MLB game, scheduled for September 9 at 9:40 PM ET:

This market will resolve to "Yes" if no runs are scored in the 1st inning by either Cardinals or Mariners.

This market will resolve to "No" if at least one run is scored in the 1st inning by either team.

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, this market will resolve 50–50.

To 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.

This market will resolve according to the official box score published on MLB.com, specifically the 1st inning run totals.

Moneyline
$2m Vol.

Spreads
$1.9k Vol.

Totalen
$5.3k Vol.

No Run First Inning?
$0 Vol.

MLB

Mariners vs. Cardinals Betting Odds & Predictions (Sep. 9, 2025) | Polymarket

Moneyline$2m Vol.

Spreads$1.9k Vol.

Totalen$5.3k Vol.

No Run First Inning?$0 Vol.

MLB

Moneyline
$2m Vol.

Spreads
$1.9k Vol.

Totalen
$5.3k Vol.

No Run First Inning?
$0 Vol.