Cubs Roster & Staff
Transactions
| Date | Transaction |
| 03/28/19 | Tyler Chatwood changed number to 32. |
| 03/28/19 | Chicago Cubs placed LHP Xavier Cedeno on the 10-day injured list retroactive to March 25, 2019. Left wrist inflammation. |
| 03/28/19 | Chicago Cubs sent LHP Brian Duensing outright to Iowa Cubs. |
| 03/28/19 | Chicago Cubs placed RHP Brandon Morrow on the 10-day injured list retroactive to March 25, 2019. Continued rehab from offseason right elbow debridement. |
| 03/28/19 | Chicago Cubs placed RHP Tony Barnette on the 10-day injured list retroactive to March 25, 2019. Right shoulder inflammation. |
| 03/27/19 | SS Dixon Machado assigned to Chicago Cubs. |
| 03/26/19 | Chicago Cubs optioned LHP Kyle Ryan to Iowa Cubs. |
| 03/24/19 | Chicago Cubs optioned C Taylor Davis to Iowa Cubs. |
| 03/24/19 | Chicago Cubs designated LHP Brian Duensing for assignment. |
| 03/24/19 | Chicago Cubs signed free agent LHP Tim Collins. |
| 03/24/19 | Chicago Cubs optioned LHP Tim Collins to Iowa Cubs. |
| 03/24/19 | Chicago Cubs optioned RHP Alec Mills to Iowa Cubs. |
| 03/24/19 | Chicago Cubs optioned CF Ian Happ to Iowa Cubs. |
| 03/24/19 | Chicago Cubs optioned RHP Dillon Maples to Iowa Cubs. |
| 03/24/19 | Chicago Cubs released RHP Junichi Tazawa. |
| 03/23/19 | Chicago Cubs released RHP Jose Rosario. |
| 03/23/19 | Chicago Cubs released SS Ryan Court. |
| 03/23/19 | Chicago Cubs released LHP Mike Zagurski. |
| 03/23/19 | RHP Ryan Williams assigned to Chicago Cubs. |
| 03/23/19 | SS Luis Vazquez assigned to Chicago Cubs. |
| 03/23/19 | Chicago Cubs released CF Evan Marzilli. |
| 03/22/19 | Chicago Cubs signed free agent RHP Jonathan Alvarez to a minor league contract. |
| 03/22/19 | Chicago Cubs signed free agent CF Cristian More to a minor league contract. |
| 03/22/19 | Chicago Cubs optioned RHP Alec Mills to Iowa Cubs. |
| 03/20/19 | Chicago Cubs released RHP Christian Bergman. |
| 03/19/19 | RHP Thomas Hatch assigned to Chicago Cubs. |
| 03/19/19 | OF Cole Roederer assigned to Chicago Cubs. |
| 03/18/19 | Chicago Cubs released RHP Mario Meza. |
| 03/15/19 | Chicago Cubs optioned RHP Duane Underwood Jr. to Iowa Cubs. |
| 03/15/19 | Chicago Cubs optioned RHP Rowan Wick to Iowa Cubs. |
| 03/15/19 | Chicago Cubs optioned RHP James Norwood to Iowa Cubs. |
| 03/15/19 | Chicago Cubs signed free agent OF Felix Stevens to a minor league contract. |
| 03/09/19 | CF Connor Myers assigned to Chicago Cubs. |
| 03/09/19 | 2B Levi Jordan assigned to Chicago Cubs. |
| 03/09/19 | RF Roberto Caro assigned to Chicago Cubs. |
| 03/09/19 | SS Rafael Narea assigned to Chicago Cubs. |
| 03/09/19 | Chicago Cubs optioned RHP Jen-Ho Tseng to Iowa Cubs. |
| 03/09/19 | Chicago Cubs optioned RHP Adbert Alzolay to Iowa Cubs. |
| 03/09/19 | Chicago Cubs optioned RHP Oscar De La Cruz to Tennessee Smokies. |
| 03/09/19 | Chicago Cubs optioned LHP Justin Steele to Tennessee Smokies. |
| 03/08/19 | Kansas City Royals traded CF Donnie Dewees to Chicago Cubs for RHP Stephen Ridings. |
| 03/08/19 | Kansas City Royals traded CF Donnie Dewees to Chicago Cubs for RHP Stephen Ridings. |
| 03/08/19 | LF Zach Borenstein assigned to Chicago Cubs. |
| 03/08/19 | Chicago Cubs released RHP Rob Scahill. |
| 03/05/19 | SS Nico Hoerner assigned to Chicago Cubs. |
| 03/02/19 | C Miguel Amaya assigned to Chicago Cubs. |
| 03/01/19 | RHP Jose Rosario assigned to Chicago Cubs. |