Sports and film fans around the globe are buzzing with excitement as Netflix officially announced the release date for its brand-new sports documentary “The UnderDog”, centered on one of Major League Baseball’s most iconic figures — Seattle Mariners legend Ken Griffey Jr. The documentary is set to premiere worldwide on October 15, 2025, exclusively on Netflix.The project has been in development for over two years and promises to give viewers unprecedented access into Griffey Jr.’s life — both on and off the diamond. Known as “The Kid”, Griffey redefined baseball with his electrifying swing, jaw-dropping catches, and larger-than-life charisma. Yet, “The UnderDog” dives deeper, highlighting the challenges, setbacks, and personal battles that shaped his remarkable career.
The film features never-before-seen footage, exclusive interviews with Griffey Jr., his family, former teammates, and some of the game’s biggest legends. It also explores the cultural and generational impact Griffey Jr. had, not just in Seattle, but across the entire sporting world.
Netflix describes the documentary as “a raw and inspirational journey of perseverance, passion, and legacy — a reminder of why Ken Griffey Jr. remains one of the greatest athletes of all time.”
Fans have already taken to social media expressing anticipation, with many calling it “the most important baseball documentary of the decade.” Mariners supporters in particular see the release as a celebration of the player who helped put Seattle baseball on the map.
With Griffey’s timeless legacy and Netflix’s storytelling prowess, “The UnderDog” is expected to be a home run for both sports fans and documentary lovers alike.
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