Overview
- Major League Baseball released 30-man rosters for all 20 teams, featuring a record 78 MLB All-Stars and 190 players on 40-man rosters, with games running March 4/5–17 across Tokyo, San Juan, Houston and Miami and a final in Miami on March 17.
- Team USA named Aaron Judge captain and will field both reigning Cy Young winners, Paul Skenes and Tarik Skubal, on a star-heavy roster that also includes Bryce Harper, Bobby Witt Jr., Cal Raleigh and Logan Webb.
- Japan confirmed Shohei Ohtani will appear only as a hitter/designated hitter, with Yoshinobu Yamamoto leading a staff bolstered by NPB award winners.
- The Dominican Republic assembled a loaded group headlined by Juan Soto, Fernando Tatis Jr., Julio Rodríguez, Vladimir Guerrero Jr. and Manny Machado, with pitching led by Sandy Alcantara, Cristopher Sánchez and Brayan Bello.
- Puerto Rico left off Francisco Lindor, Carlos Correa and Javy Báez after denials from tournament insurer NFP under stricter age/contract-year and medical reviews, while star closer Edwin Díaz returns.