Nestor Molina

Became a Cardinal: Signed as a minor league free agent in January 2018.

Granden Goetzmann

Became a Cardinal: Signed as a minor league free agent in January 2018.

Conner Greene

Became a Cardinal: Acquired from Toronto along with pitcher Dominic Leone for outfielder Randal Grichuk on January 19, 2018.

Dominic Leone

Became a Cardinal: Acquired from Toronto along with pitcher Conner Greene for outfielder Randal Grichuk on January 19, 2018.

Hector Villalobos

Became a Cardinal: Acquired from Leones de Yucatan of the Mexican League on November 29, 2017.

Luis Garcia

Became a Cardinal: Signed a minor league contract November 29, 2017.

Miguel Maiz

Became a Cardinal: Signed a minor league contract November 29, 2017.

Freddy Pacheco

Became a Cardinal: Signed a minor league contract November 29, 2017.

Inohan Paniagua

Became a Cardinal: Signed a minor league contract in 4Q 2017.

Josue Ramirez

Became a Cardinal: Signed a minor league contract October 25, 2017.

Saniel Santana

Became a Cardinal: Signed a minor league contract December 1, 2017.

Sebastian Tabata

Became a Cardinal: Signed a minor league contract on November 3, 2017.

Elvin De Jesus

Became a Cardinal: Signed a minor league contract in 4Q 2017.

Claudio Ramirez

Became a Cardinal: Signed a minor league contract in 4Q 2017.