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The Official Site of the Seattle Mariners
Moose's Birthday Bash

Sunday, April 15 - 1:10 p.m.

Join us as we celebrate Moose's birthday, April 15 with a pregame party in the Ellis Pavilion from 11:15 a.m. - 12:15 p.m. Your ticket includes entrance to the party, cake, games and more.

Enter Promo Code: CELEBRATE

Deadline to purchase: Friday, April 13 - 5:00 p.m.


  • $20 View Level

Please note: This special offer is online only and is not available at Team Stores or box office outlets. Please contact Elizabeth McCloskey at (206) 346-4519 with any questions.

To order up to 19 tickets or accessible seating

  • Click on the "Buy Tickets" button below.
  • Select "Find Tickets" then enter CELEBRATE as your special offer code and click "Go".

Please note: Accessible seating is located throughout the ballpark and is identified within a section with the universal ADA symbol and adjoining seating box. All seats are FULL FLEX, designed to allow for a wheelchair OR companion seating.

To order 20 or more tickets

Please call Elizabeth McCloskey at (206) 346-4519.

  • Groups of 20 or more will have their group name displayed on the scoreboard following the 4th inning.
  • Groups of 20 or more will receive two (2) complimentary tickets to a 2018 regular season home game (restrictions apply, click here for complete details).

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This discount online offer is purchased with the intent of being used by the purchaser. Resale of these tickets to a third party is prohibited and, in such case, purchaser risks deactivation of said tickets causing lack of access to the game at Safeco Field.