The MLB’s Seattle Mariners baseball team will be hosting another One Piece-themed night event on March 31, 2026 against the New York Yankees. This is the team’s second collaboration with the anime franchise and Toei Animation after hosting a T-shirt giveaway in April 2025.
©Eiichiro Oda/Shueisha, Toei Animation
Each theme ticket holder will receive a commemorative One Piece Seattle Mariners baseball jersey.
Our resident anime expert @JRODshow44 is pretty fired up about One Piece Night returning to @TMobilePark on March 31 🏴☠️
🔗 https://t.co/uDqgNuFB6M pic.twitter.com/kOG4bdZOXw
— Seattle Mariners (@Mariners) February 4, 2026
The schedule of events for the special theme night is as follows:
Victory Hall at the Boxyard (located right across T-Mobile Park)
- • 2:30 PM
- ○ ONE PIECE Card Game Demo Starts
- ○ Commemorative Jersey Pick-Up Starts
- • 4:30 PM
- ○ Commemorative Jersey Pick-Up Ends
- • 5:00 PM
- ○ ONE PIECE Card Game Demo Ends
T-Mobile Park
- • 5:10 PM
- ○ Gates Open for Ticket Holders
- ○ Commemorative Jersey Pick-Up Starts — Location: Outside Section 339 (Note: Continues through the end of the third Inning)
- • 6:40 PM
- ○ Mariners vs Yankees Game Time
Fans can now purchase tickets to the “Seattle Mariners X ONE PIECE Night” exclusively on the Mariner’s official website.
VIZ Media releases the One Piece manga series in English, describing the main premise as:
As a child, Monkey D. Luffy was inspired to become a pirate by listening to the tales of the buccaneer “Red-Haired” Shanks. But his life changed when Luffy accidentally ate the Gum-Gum Devil Fruit and gained the power to stretch like rubber…at the cost of never being able to swim again! Years later, still vowing to become the king of the pirates, Luffy sets out on his adventure…one guy alone in a rowboat, in search of the legendary “One Piece,” said to be the greatest treasure in the world…
Source: press release
