Cardinals Roster & Staff
Transactions
| Date | Transaction |
| 11/27/18 | St. Louis Cardinals signed free agent RHP Chris Beck to a minor league contract and invited him to spring training. |
| 11/26/18 | St. Louis Cardinals sent RHP Derian Gonzalez outright to Memphis Redbirds. |
| 11/26/18 | Kansas City Royals claimed Conner Greene off waivers from St. Louis Cardinals. |
| 11/20/18 | St. Louis Cardinals selected the contract of Ramon Urias from Memphis Redbirds. |
| 11/20/18 | St. Louis Cardinals designated RHP Conner Greene for assignment. |
| 11/20/18 | St. Louis Cardinals signed free agent LHP Diorys Guerrero to a minor league contract. |
| 11/20/18 | St. Louis Cardinals designated RHP Derian Gonzalez for assignment. |
| 11/20/18 | St. Louis Cardinals selected the contract of Ryan Helsley from Memphis Redbirds. |
| 11/20/18 | St. Louis Cardinals selected the contract of Genesis Cabrera from Memphis Redbirds. |
| 11/20/18 | St. Louis Cardinals selected the contract of Lane Thomas from Memphis Redbirds. |
| 11/19/18 | St. Louis Cardinals signed free agent LHP Tommy Layne to a minor league contract and invited him to spring training. |
| 11/19/18 | St. Louis Cardinals signed free agent RHP Mike Hauschild to a minor league contract and invited him to spring training. |
| 11/19/18 | St. Louis Cardinals signed free agent RHP Harold Arauz to a minor league contract. |
| 11/19/18 | St. Louis Cardinals signed free agent LHP Hunter Cervenka to a minor league contract and invited him to spring training. |
| 11/19/18 | St. Louis Cardinals signed free agent RHP Williams Perez to a minor league contract and invited him to spring training. |
| 11/19/18 | St. Louis Cardinals signed free agent C Joe Hudson to a minor league contract and invited him to spring training. |
| 11/02/18 | Cincinnati Reds claimed RHP Matt Bowman off waivers from St. Louis Cardinals. |
| 11/01/18 | St. Louis Cardinals sent C Francisco Pena outright to Memphis Redbirds. |
| 11/01/18 | San Diego Padres claimed 2B Greg Garcia off waivers from St. Louis Cardinals. |
| 11/01/18 | St. Louis Cardinals activated RF Dexter Fowler from the 60-day injured list. |
| 11/01/18 | St. Louis Cardinals activated RHP Luke Gregerson from the 60-day injured list. |
| 11/01/18 | Alex Reyes roster status changed by St. Louis Cardinals. |
| 11/01/18 | St. Louis Cardinals activated RHP Michael Wacha from the 60-day injured list. |