Toei Animation returns to Seattle this spring for its second collaboration between ONE PIECE and the Seattle Mariners, following the success of last year’s event.
Seattle Mariners x ONE PIECE Night will take place on Tuesday, March 31, 2026, at T-Mobile Park, during the Mariners’ game against the New York Yankees.
Fans can purchase special theme tickets now at mariners.com/onepiece. Each ticket includes a commemorative ONE PIECE Seattle Mariners baseball jersey, available while supplies last. Tickets are expected to sell out quickly, as they did last year.
The event will feature a ONE PIECE Card Game demo and multiple jersey pick-up opportunities throughout the day.
Event Visual:
Event Schedule (as of February 4, 2026)
Victory Hall
- 2:30 PM – ONE PIECE Card Game Demo begins
- 2:30 PM – Jersey pick-up begins
- 4:30 PM – Jersey pick-up ends
- 5:00 PM – Card Game Demo ends
T-Mobile Park
- 5:10 PM – Gates open
- Jersey pick-up available outside Section 339 (until end of the 3rd inning)
- 6:40 PM – Mariners vs Yankees game begins
Created by Eiichiro Oda and produced by Toei Animation, ONE PIECE follows Monkey D. Luffy and the Straw Hat Pirates on their journey to find the legendary treasure known as the One Piece. Since its debut in 1999, the series has become the best-selling manga of all time and one of the most popular anime franchises worldwide.
This April, ONE PIECE returns with new weekly episodes, starting with the highly anticipated Elbaph arc.
Key Visual:
Now 26 years since the series’ TV premiere, “ONE PIECE” has taken its place as part of mainstream pop culture, attracting fans of all ages. Today, the franchise encompasses 15 feature films, numerous video games, a trading card game and a constantly growing catalog of licensed apparel, footwear, accessories, toys, games, sporting goods, stationary, gifts, novelties, household goods, books, food & beverage, and location-based entertainment.
Crunchyroll describes the series as follows:
Monkey. D. Luffy refuses to let anyone or anything stand in the way of his quest to become the king of all pirates. With a course charted for the treacherous waters of the Grand Line and beyond, this is one captain who’ll never give up until he’s claimed the greatest treasure on Earth: the Legendary One Piece!
Source: Press Release
©Eiichiro Oda/Shueisha, Toei Animation
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