Mariners Card Show

A baseball game for collectors featuring a pregame card show on the Rooftop Boardwalk and a Mariners-themed Card Show Aloha Shirt. **What to know** - Redeem shirt at Rooftop Boardwalk before end of 3rd inning - Online only, not available at Box Office

When

(end time approximate)

Where

T-Mobile Park, 1250 1st Avenue South, Seattle, Washington 98134, United States

Ages

0 mo+

Registration

Registration required.

Deadline to purchase: Monday, August 24 – noon. Redeem shirt at Rooftop Boardwalk before end of 3rd inning. Sizing first‑come, first‑served. Online only; not available at Box Office. No resale.

Register

Contact

Phone
(206) 346-4000
Email
TicketHelp@Mariners.com
Website
https://www.mlb.com/mariners