The Cincinnati Reds acquired outfielder Delino DeShields from the Boston Red Sox for cash.

The Boston Red Sox acquired pitcher Brad Peacock from the Cleveland Indians for cash.

The Boston Red Sox acquired outfielder Delino DeShields from the Texas Rangers for cash.

The Boston Red Sox acquired pitcher Hansel Robles from the Minnesota Twins for pitcher Alex Scherff.

The Boston Red Sox acquired pitcher Austin Davis from the Pittsburgh Pirates for infielder/outfielder Michael Chavis.

The Boston Red Sox acquired outfielder Kyle Schwarber from the Washington Nationals for pitcher Aldo Ramirez.

The Boston Red Sox acquired pitcher Yacksel Rios from the Seattle Mariners for cash.

Tampa Bay Rays acquired pitchers Chris Mazza, Jeffrey Springs and cash from the Boston Red Sox for catcher Ronaldo Hernandez and infielder Nick Sogard.

In a three-team trade, the Kansas City Royals acquired outfielder Andrew Benintendi and cash from the Boston Red Sox; Boston acquired outfielder Franchy Cordero and two players to be named later (Luis De La Rosa and Grant Gambrell - 06/04/2021) from the Royals, and pitcher Josh Winckowski and a player to be named later (Freddy Valdez - 06/04/2021) from the New York Mets; and New York acquired outfielder Khalil Lee from the Royals.

The Boston Red Sox acquired pitcher Adam Ottavino, pitcher Frank German and cash considerations from the New York Yankees for future considerations.

The Philadelphia Phillies acquired infielder C.J. Chatham from the Boston Red Sox for a player to be named later or cash considerations.

The Colorado Rockies acquired pitcher Yoan Aybar from the Boston Red Sox for infielder Christian Koss.

The Chicago Cubs acquired pitcher Josh Osich from the Boston Red Sox for a player to be named later (Zach Bryant - 02/27/2021).

The Colorado Rockies acquired outfielder Kevin Pillar and cash considerations from the Boston Red Sox for a player to be named later (Jacob Wallace - 09/18/2020) and international bonus pool money in 2020-21.

The San Diego Padres acquired first baseman Mitch Moreland from the Boston Red Sox for outfielder Jeisson Rosario and infielder Hudson Potts.

The Philadelphia Phillies acquired pitchers Brandon Workman and Heath Hembree, and cash from the Boston Red Sox for pitchers Nick Pivetta and Connor Seabold.

The Boston Red Sox acquired pitcher Dylan Covey from the Tampa Bay Rays for future considerations.

The Los Angeles Dodgers acquired outfielder Mookie Betts, pitcher David Price and cash from the Boston Red Sox for outfielder Alex Verdugo, infielder Jeter Downs and catcher Connor Wong.

The Chicago Cubs acquired pitcher Travis Lakins from the Boston Red Sox for a player to be named later.

The Boston Red Sox acquired pitcher Matt Hall from the Detroit Tigers for catcher Jhon Nunez.

The Boston Red Sox acquired pitcher Jeffrey Springs from the Texas Rangers for first baseman Sam Travis.

The Boston Red Sox acquired pitcher Austin Brice from the Miami Marlins for infielder Angeudis Santos.

The Cleveland Indians acquired catcher Sandy Leon from the Boston Red Sox for pitcher Adenys Bautista.

The Minnesota Twins acquired pitcher Jeremy Bleich from the Boston Red Sox for cash.

The Boston Red Sox acquired pitcher Andrew Cashner and cash from the Baltimore Orioles for outfielder Elio Prado and infielder Noelberth Romero.

The Arizona Diamondbacks acquired catcher Blake Swihart and international bonus pool money in 2018-19 from the Boston Red Sox for outfielder Marcus Wilson.

The Boston Red Sox acquired pitcher Colten Brewer from the San Diego Padres for infielder Esteban Quiroz.

The Boston Red Sox acquired infielder Ian Kinsler and cash from the Los Angeles Angels for pitchers Williams Jerez and Ty Buttrey.

The Boston Red Sox acquired pitcher Nathan Eovaldi from the Tampa Bay Rays for pitcher Jalen Beeks.

The Cincinnati Reds acquired outfielder Lorenzo Cedrola from the Boston Red Sox for international bonus pool money in 2018-19.

The Boston Red Sox acquired infielder/outfielder Steve Pearce and cash from the Toronto Blue Jays for infielder Santiago Espinal.

The Arizona Diamondbacks acquired infielder Deven Marrero from the Boston Red Sox for a player to be named later.

The Pittsburgh Pirates acquired outfielder Bryce Brentz from the Boston Red Sox for cash.

The Boston Red Sox acquired outfielder Rajai Davis from the Oakland Athletics for outfielder Rafael Rincones.

The Boston Red Sox acquired pitcher Addison Reed from the New York Mets for pitchers Jamie Callahan, Gerson Bautista and Steve Nogosek.

The Los Angeles Dodgers acquired pitcher Luis Ysla from the Boston Red Sox for cash.

The Boston Red Sox acquired infielder/outfielder Eduardo Nunez from the San Francisco Giants for pitchers Shaun Anderson and Gregory Santos.

The Philadelphia Phillies acquired pitcher Clay Buchholz from the Boston Red Sox for infielder Joshua Tobias.

The Chicago White Sox acquired pitcher Chris Sale from the Chicago White Sox for infielder Yoan Moncada, pitcher Michael Kopech, outfielder Luis Alexander Basabe and pitcher Victor Diaz.

The Boston Red Sox acquired pitcher Tyler Thornburg from the Milwaukee Brewers for infielders Travis Shaw and Mauricio Dubon, pitcher Josh Pennington and a player to be named later.

The Boston Red Sox acquired pitcher Fernando Abad from the Minnesota Twins for pitcher Pat Light.

The Boston Red Sox acquired pitcher Drew Pomeranz from the San Diego Padres for pitcher Anderson Espinoza.

The Boston Red Sox acquired pitcher Brad Ziegler from the Arizona Diamondbacks for infielder Luis Alejandro Basabe and pitcher Jose Almonte.

The Boston Red Sox acquired infielder/outfielder Michael Martinez from the Cleveland Indians for cash.

The Boston Red Sox acquired infielder Aaron Hill and cash from the Milwaukee Brewers for infielder Wendell Rijo and pitcher Aaron Wilkerson.

The Milwaukee Brewers acquired infielder Garin Cecchini from the Boston Red Sox for cash.

The Boston Red Sox acquired pitcher Craig Kimbrel from the San Diego Padres for outfielder Manuel Margot, pitcher Logan Allen plus infielders Javier Guerra and Carlos Asuaje.

The San Francisco Giants acquired outfielder Alejandro de Aza from the Boston Red Sox for pitcher Luis Ysla.

The Texas Rangers acquired first baseman Mike Napoli and cash from the Boston Red Sox for a player to be named later or cash considerations.

The Boston Red Sox acquired pitcher Ryan Cook from the Oakland Athletics for cash considerations or a player to be named later.

The Los Angeles Angels of Anaheim acquired outfielder Shane Victorino and cash from the Boston Red Sox for infielder Josh Rutledge.

The Boston Red Sox acquired outfielder Alejandro de Aza and cash from the Baltimore Orioles for pitcher Joe Gunkel.

The Boston Red Sox acquired outfielder Carlos Peguero from the Texas Rangers for cash.

The Boston Red Sox acquired pitcher John Cornely from the Atlanta Braves for cash.

The Oakland Athletics acquired pitcher Edward Mujica and cash from the Boston Red Sox for a player to be named later or cash considerations.

The Boston Red Sox acquired catcher Sandy Leon from the Washington Nationals for cash.

The Boston Red Sox acquired pitcher Robbie Ross Jr. from the Texas Rangers for pitcher Anthony Ranaudo.

The Washington Nationals acquired catcher Dan Butler from the Boston Red Sox for pitcher Danny Rosenbaum.

The San Diego Padres acquired third baseman Will Middlebrooks from the Boston Red Sox for catcher Ryan Hanigan.

The Boston Red Sox acquired pitcher Anthony Varvaro from the Atlanta Braves for pitcher Aaron Kurcz.

The Boston Red Sox acquired pitcher Zeke Spruill from the Arizona Diamondbacks for pitcher Myles Smith.

The Boston Red Sox acquired pitcher Wade Miley from the Arizona Diamondbacks for pitchers Rubby De La Rosa and Allen Webster, plus infielder Raymel Flores.

The Boston Red Sox acquired pitcher Rick Porcello from the Detroit Tigers for outfielder Yoenis Cespedes and pitchers Alex Wilson and Gabe Speier.