https://www.mlbtraderumors.com/2021/...r-rosters.html

American League

Angels: Shohei Ohtani (starting DH, and also named to the team as a pitcher), Mike Trout (starting OF), Jared Walsh
Astros: Jose Altuve, Michael Brantley, Carlos Correa, Ryan Pressly
Athletics: Matt Olson
Blue Jays: Bo Bichette, Vladimir Guerrero Jr. (starting 1B), Teoscar Hernandez (starting OF), Marcus Semien (starting 2B)
Indians: Shane Bieber, Jose Ramirez
Mariners: Yusei Kikuchi
Orioles: Cedric Mullins
Rangers: Joey Gallo, Adolis Garcia, Kyle Gibson
Rays: Mike Zunino
Red Sox: Matt Barnes, Xander Bogaerts (starting SS), Rafael Devers (starting 3B), Nathan Eovaldi, J.D. Martinez
Royals: Salvador Perez (starting C)
Tigers: Gregory Soto
Twins: Nelson Cruz
White Sox: Liam Hendriks, Lance Lynn, Carlos Rodon
Yankees: Aroldis Chapman, Gerrit Cole, Aaron Judge (starting OF)

National League

Braves: Ronald Acuna Jr. (starting OF), Ozzie Albies, Freddie Freeman (starting 1B)
Brewers: Corbin Burnes, Josh Hader, Brandon Woodruff
Cardinals: Nolan Arenado (starting 3B), Alex Reyes
Cubs: Kris Bryant, Craig Kimbrel
Diamondbacks: Eduardo Escobar
Dodgers: Mookie Betts, Max Muncy (presumptive starting DH), Chris Taylor
Giants: Brandon Crawford, Kevin Gausman, Buster Posey (starting C)
Marlins: Trevor Rogers
Mets: Jacob deGrom
Nationals: Kyle Schwarber, Juan Soto, Trea Turner
Padres: Jake Cronenworth, Yu Darvish, Mark Melancon, Fernando Tatis Jr. (starting SS)
Phillies: J.T. Realmuto, Zack Wheeler
Pirates: Adam Frazier (starting 2B), Bryan Reynolds
Reds: Nick Castellanos (starting OF), Jesse Winker (starting OF)
Rockies: German Marquez