The St. Louis Cardinals acquired pitcher Jon Lester from the Washington Nationals for outfielder Lane Thomas.

The St. Louis Cardinals acquired pitcher J.A. Happ from the Minnesota Twins for pitchers John Gant and Evan Sisk, and cash.

The St. Louis Cardinals acquired pitcher T.J. Zeuch from the Toronto Blue Jays for cash.

The Pittsburgh Pirates acquired first baseman John Nogowski from the St. Louis Cardinals for cash.

The St. Louis Cardinals acquired catcher Ali Sanchez from the New York Mets for cash.

The Philadelphia Phillies acquired pitcher Johan Quezada from the St. Louis Cardinals for cash.

The Los Angeles Angels acquired outfielder Dexter Fowler from the St. Louis Cardinals for a player to be named later.

The St. Louis Cardinals acquired third baseman Nolan Arenado from the Colorado Rockies for pitchers Austin Gomber, Tony Locey and Jake Sommers, and infielders Elehuris Montero and Mateo Gil.

The St. Louis Cardinals acquired pitcher Domingo Robles from the Pittsburgh Pirates for international bonus pool money in 2020-21.

The St. Louis Cardinals acquired outfielder Austin Dean from the Miami Marlins for outfielder Diowill Burgos.

The Tampa Bay Rays acquired first baseman/outfielder Jose Martinez, outfielder Randy Arozarena and a supplemental first-round draft pick in 2020 from the St. Louis Cardinals for pitcher Matthew Liberatore, catcher Edgardo Rodriguez and a supplemental second-round draft pick in 2020.

The Texas Rangers acquired outfielder Adolis Garcia from the St. Louis Cardinals for cash.

The Los Angeles Dodgers acquired infielder Jedd Gyorko, international bonus pool money in 2019-20 and cash from the St. Louis Cardinals for pitchers Tony Cingrani and Jeffry Abreu.

The St. Louis Cardinals acquired pitcher Zac Rosscup from the Los Angeles Dodgers for cash.

The San Francisco Giants acquired catcher Francisco Pena from the St. Louis Cardinals for cash.

The St. Louis Cardinals acquired outfielder/infielder Drew Robinson from the Texas Rangers for infielder Patrick Wisdom.

The St. Louis Cardinals acquired first baseman Paul Goldschmidt from the Arizona Diamondbacks for pitcher Luke Weaver, catcher Carson Kelly, infielder Andy Young and a competitive balance round B draft pick in 2019.

The Cleveland Indians acquired outfielder/infielder Oscar Mercado from the St. Louis Cardinals for outfielders Conner Capel and Jhon Torres.

The Tampa Bay Rays acquired outfielder Tommy Pham and international bonus pool money in 2018-19 from the St. Louis Cardinals for pitcher Genesis Cabrera, outfielder Justin Williams and pitcher Roel Ramirez.

The New York Yankees acquired first baseman Luke Voit and international bonus pool money in 2018-19 from the St. Louis Cardinals for pitchers Chasen Shreve and Giovanny Gallegos.

The Seattle Mariners acquired pitcher Sam Tuivailala from the St. Louis Cardinals for pitcher Seth Elledge.

The St. Louis Cardinals acquired pitcher Elniery Garcia from the Philadelphia Phillies for international bonus pool money in 2018-19.

The Los Angeles Dodgers acquired infielder/outfielder Breyvic Valera from the St. Louis Cardinals for outfielder Johan Mieses.

The Oakland Athletics acquired pitcher Josh Lucas from the St. Louis Cardinals for pitcher Casey Meisner.

The Toronto Blue Jays acquired outfielder Randal Grichuk from the St. Louis Cardinals for pitchers Dominic Leone and Conner Greene.

The St. Louis Cardinals acquired outfielder Marcell Ozuna from the Miami Marlins for pitcher Sandy Alcantara, outfielder Magneuris Sierra and pitchers Zac Gallen and Daniel Castano.

The Oakland Athletics acquired outfielder Stephen Piscotty from the St. Louis Cardinals for infielders Yairo Munoz and Max Schrock.

The Toronto Blue Jays acquired infielder Aledmys Diaz from the St. Louis Cardinals for outfielder J.B. Woodman.

The St. Louis Cardinals acquired pitcher Juan Nicasio from the Philadelphia Phillies for infielder Eliezer Alvarez.

The Seattle Mariners acquired pitcher Mike Leake, international bonus pool money in 2017-18 and cash from the St. Louis Cardinals for infielder Rayder Ascanio.

The Seattle Mariners acquired pitcher Marco Gonzales from the St. Louis Cardinals for outfielder Tyler O'Neill.

The Atlanta Braves acquired first baseman Matt Adams and cash from the St. Louis Cardinals for infielder Juan Yepez.

The Atlanta Braves acquired pitcher Jaime Garcia from the St. Louis Cardinals for pitchers John Gant and Chris Ellis, plus infielder Luke Dykstra.

The St. Louis Cardinals acquired pitcher Zach Duke from the Chicago White Sox for outfielder Charlie Tilson.

The St. Louis Cardinals acquired first baseman/outfielder Jose Martinez from the Kansas City Royals for cash.

The Baltimore Orioles acquired pitcher Jayson Aquino from the St. Louis Cardinals for cash.

The St. Louis Cardinals acquired infielder Jedd Gyorko and cash from the San Diego Padres for outfielder Jon Jay.

The Kansas City Royals acquired catcher Tony Cruz from the St. Louis Cardinals for infielder Jose Alexander Martinez.

The St. Louis Cardinals acquired pitcher Jonathan Broxton and cash from the Milwaukee Brewers for outfielder Malik Collymore.

The St. Louis Cardinals acquired first baseman/outfielder Brandon Moss from the Cleveland Indians for pitcher Rob Kaminsky.

The St. Louis Cardinals acquired pitcher Steve Cishek from the Miami Marlins for pitcher Kyle Barraclough.

The Texas Rangers acquired pitcher Sam Freeman from the St. Louis Cardinals for cash.

The St. Louis Cardinals acquired catcher Michael Ohlman from the Baltimore Orioles for cash.

The St. Louis Cardinals acquired infielder Ty Kelly from the Seattle Mariners for pitcher Sam Gaviglio.

The St. Louis Cardinals acquired outfielder Jason Heyward and pitcher Jordan Walden from the Atlanta Braves for pitchers Shelby Miller and Tyrell Jenkins.