It is an on-field jersey. This is the special jersey the MLB players wore the weekend of the Little League World Series during Ohtanis rookie year
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Shohei Ohtani timeline: The rookie MLB season of the phenom from
Shohei Ohtani Baseball Cards
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Shohei Ohtani Anaheim Angels Youth/Kids Official Player Baseball
2022 ESPYs: MLB Star Shohei Ohtani Wins Best Athlete, Men's Sports
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A Timeline of Shohei Ohtani's Career - Ohtani Comes To America
Shohei Ohtani Apparel, Shohei Ohtani Jersey, Shirt
Shohei Ohtani Apparel, Shohei Ohtani Jersey, Shirt
Shohei Ohtani Gear, Shohei Ohtani Jerseys, Merchandise