Cubs Roster & Staff
Transactions
| Date | Transaction |
| 06/30/10 | C Micah Gibbs assigned to AZL Cubs from Chicago Cubs. |
| 06/29/10 | Chicago Cubs placed LHP John Grabow on the 15-day disabled list. left knee sprain |
| 06/29/10 | Chicago Cubs recalled Jeff Stevens from Iowa Cubs. |
| 06/29/10 | Chicago Cubs recalled LHP James Russell from Iowa Cubs. |
| 06/29/10 | Chicago Cubs placed RHP Carlos Zambrano on the restricted list. |
| 06/28/10 | Eric Rice assigned to AZL Cubs from Chicago Cubs. |
| 06/27/10 | Chicago Cubs signed RHP Eric Rice. |
| 06/27/10 | Elliot Soto assigned to AZL Cubs from Chicago Cubs. |
| 06/26/10 | Chicago Cubs signed SS Elliot Soto. |
| 06/26/10 | RHP Carlos Zambrano suspended. |
| 06/26/10 | Chicago Cubs optioned Jeff Stevens to Iowa Cubs. |
| 06/26/10 | Chicago Cubs selected the contract of RHP Brian Schlitter from Iowa Cubs. |
| 06/25/10 | Chicago Cubs activated 3B Aramis Ramirez from the 15-day disabled list. |
| 06/25/10 | Chicago Cubs designated 3B Chad Tracy for assignment. |
| 06/22/10 | Hunter Ackerman assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | OF Dong-Yub Kim assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | 3B Jake McAloose assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Dustin Harrington assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Anthony Giansanti assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Ryan Cuneo assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Pin-Chieh Chen assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Austin Reed assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Matt Loosen assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Aaron Kurcz assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Eric Jokisch assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Cameron Greathouse assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Dustin Fitzgerald assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Brent Ebinger assigned to AZL Cubs from Chicago Cubs. |
| 06/22/10 | Chicago Cubs signed RHP Ryan Hartman. |
| 06/22/10 | Chicago Cubs signed C Chad Noble. |
| 06/22/10 | Chicago Cubs signed 2B Pierre LePage. |
| 06/21/10 | Chicago Cubs signed free agent OF Dong-Yub Kim to a minor league contract. |
| 06/21/10 | Chicago Cubs signed LHP Hunter Ackerman. |
| 06/21/10 | Chicago Cubs signed LHP Brent Ebinger. |
| 06/21/10 | Chicago Cubs signed RHP Dustin Fitzgerald. |
| 06/21/10 | Chicago Cubs signed LHP Cameron Greathouse. |
| 06/21/10 | Chicago Cubs signed LHP Eric Jokisch. |
| 06/21/10 | Chicago Cubs signed RHP Aaron Kurcz. |
| 06/21/10 | Chicago Cubs signed RHP Matt Loosen. |
| 06/21/10 | Chicago Cubs signed RHP Austin Reed. |
| 06/21/10 | RHP Tzu-An Wang assigned to AZL Cubs from Chicago Cubs. |
| 06/21/10 | 2B Doug Cherry assigned to AZL Cubs from Chicago Cubs. |
| 06/21/10 | Chicago Cubs signed 1B Ryan Cuneo. |
| 06/21/10 | Chicago Cubs signed OF Anthony Giansanti. |
| 06/21/10 | Chicago Cubs signed 3B Dustin Harrington. |
| 06/21/10 | Chicago Cubs signed 3B Jake McAloose. |
| 06/21/10 | Chicago Cubs signed C Micah Gibbs. |
| 06/20/10 | Chicago Cubs signed free agent IF Pin-Chieh Chen to a minor league contract. |
| 06/20/10 | Chicago Cubs signed free agent RHP Tzu-An Wang to a minor league contract. |
| 06/20/10 | Chicago Cubs signed IF Doug Cherry. |
| 06/19/10 | Chicago Cubs signed RHP Hayden Simpson. |
| 06/15/10 | Joseph Zeller assigned to Boise Hawks from Chicago Cubs. |
| 06/15/10 | Chicago Cubs activated LHP John Grabow from the 15-day disabled list. |
| 06/15/10 | Chicago Cubs optioned Mitch Atkins to Iowa Cubs. |
| 06/15/10 | C Jeff Vigurs assigned to Boise Hawks from Chicago Cubs. |
| 06/15/10 | Juan Serrano assigned to Boise Hawks from Chicago Cubs. |
| 06/14/10 | Chicago Cubs signed free agent RHP Juan Serrano to a minor league contract. |
| 06/14/10 | Chicago Cubs signed RHP Joseph Zeller. |
| 06/14/10 | Chicago Cubs signed C Jeff Vigurs. |
| 06/12/10 | Chicago Cubs optioned James Russell to Iowa Cubs. |
| 06/12/10 | Chicago Cubs recalled Mitch Atkins from Iowa Cubs. |
| 06/09/10 | Chicago Cubs signed free agent LHP Alberto Diaz to a minor league contract. |
| 06/09/10 | Chicago Cubs placed 3B Aramis Ramirez on the 15-day disabled list retroactive to June 8, 2010. Bruised left thumb. |
| 06/09/10 | Chicago Cubs recalled Chad Tracy from Iowa Cubs. |
| 06/07/10 | Chicago Cubs sent LHP John Grabow on a rehab assignment to Iowa Cubs. |