Cubs Roster & Staff
Transactions
| Date | Transaction |
| 09/30/13 | Chicago Cubs recalled Brett Jackson from Tennessee Smokies. |
| 09/30/13 | Chicago Cubs recalled Neil Ramirez from Tennessee Smokies. |
| 09/30/13 | Chicago Cubs recalled Matt Szczur from Tennessee Smokies. |
| 09/30/13 | Chicago Cubs recalled Josh Vitters from Iowa Cubs. |
| 09/30/13 | Chicago Cubs recalled Christian Villanueva from Tennessee Smokies. |
| 09/30/13 | Chicago Cubs recalled Jorge Soler from Daytona Cubs. |
| 09/30/13 | Chicago Cubs recalled Mike Olt from Iowa Cubs. |
| 09/30/13 | Chicago Cubs recalled Trey McNutt from Tennessee Smokies. |
| 09/25/13 | Chicago Cubs placed C Welington Castillo on the 15-day disabled list retroactive to September 20, 2013. Recovering from September 2013 right knee surgery. |
| 09/22/13 | Chicago Cubs signed free agent RHP Alan Oaks to a minor league contract. |
| 09/16/13 | Chicago Cubs signed free agent RHP Junior Marte to a minor league contract. |
| 09/16/13 | Chicago Cubs released 3B Cody Ransom. |
| 09/08/13 | Chicago Cubs activated RHP Scott Baker from the 60-day disabled list. |
| 09/08/13 | Chicago Cubs designated 3B Cody Ransom for assignment. |
| 09/06/13 | Chicago Cubs sent LF Cole Gillespie outright to Iowa Cubs. |
| 09/06/13 | Chicago Cubs sent RHP Michael Bowden outright to Iowa Cubs. |
| 09/06/13 | Chicago Cubs activated RHP Daniel Bard. |
| 09/05/13 | Chicago Cubs sent Dave Sappelt outright to Iowa Cubs. |
| 09/04/13 | Chicago Cubs claimed RHP Daniel Bard off waivers from Boston Red Sox. |
| 09/04/13 | Chicago Cubs designated Cole Gillespie for assignment. |
| 09/04/13 | Chicago Cubs designated Michael Bowden for assignment. |
| 09/04/13 | Chicago Cubs selected the contract of RHP Chang-Yong Lim from Iowa Cubs. |
| 09/03/13 | Chicago Cubs recalled RHP Justin Grimm from Iowa Cubs. |
| 09/03/13 | Chicago Cubs designated Dave Sappelt for assignment. |
| 09/03/13 | Chicago Cubs sent Eduardo Sanchez outright to Iowa Cubs. |
| 09/03/13 | Chicago Cubs recalled Brooks Raley from Iowa Cubs. |
| 09/03/13 | Chicago Cubs selected the contract of Zac Rosscup from Iowa Cubs. |
| 09/03/13 | Chicago Cubs recalled J.C. Boscan from Iowa Cubs. |
| 09/01/13 | Chicago Cubs designated Eduardo Sanchez for assignment. |
| 09/01/13 | Chicago Cubs activated 3B Luis Valbuena from the 15-day disabled list. |
| 09/01/13 | Chicago Cubs designated Eduardo Sanchez for assignment. |
| 09/01/13 | Chicago Cubs activated CF Ryan Sweeney from the 60-day disabled list. |
| 09/01/13 | Chicago Cubs recalled RHP Alberto Cabrera from Iowa Cubs. |
| 09/01/13 | Ryan Sweeney roster status changed by Chicago Cubs. |
| 09/01/13 | Luis Valbuena roster status changed by Chicago Cubs. |