Cubs Roster & Staff
Transactions
| Date | Transaction |
| 08/24/10 | Chicago Cubs optioned Justin Berg to Iowa Cubs. |
| 08/24/10 | Chicago Cubs selected the contract of Scott Maine from Iowa Cubs. |
| 08/23/10 | Chicago Cubs optioned Welington Castillo to Iowa Cubs. |
| 08/23/10 | Chicago Cubs optioned Sam Fuld to Iowa Cubs. |
| 08/23/10 | Chicago Cubs recalled 1B Micah Hoffpauir from Iowa Cubs. |
| 08/23/10 | Chicago Cubs activated C Geovany Soto from the 15-day disabled list. |
| 08/20/10 | Jeffrey Lorick assigned to Peoria Chiefs from Chicago Cubs. |
| 08/20/10 | RHP Robinson Lopez assigned to Peoria Chiefs from Chicago Cubs. |
| 08/19/10 | Chicago Cubs recalled Sam Fuld from Iowa Cubs. |
| 08/18/10 | Chicago Cubs traded 1B Derrek Lee to Atlanta Braves for LHP Jeffrey Lorick, RHP Robinson Lopez and RHP Ty'Relle Harris. |
| 08/18/10 | RHP Ty'Relle Harris assigned to Tennessee Smokies from Chicago Cubs. |
| 08/18/10 | Chicago Cubs traded 1B Derrek Lee to Atlanta Braves for LHP Jeffrey Lorick, RHP Robinson Lopez and RHP Ty'Relle Harris. |
| 08/18/10 | Chicago Cubs traded 1B Derrek Lee to Atlanta Braves for LHP Jeffrey Lorick, RHP Robinson Lopez and RHP Ty'Relle Harris. |
| 08/18/10 | Chicago Cubs traded 1B Derrek Lee to Atlanta Braves for LHP Jeffrey Lorick, RHP Robinson Lopez and RHP Ty'Relle Harris. |
| 08/16/10 | Chicago Cubs signed LHP Casey Harman. |
| 08/16/10 | Chicago Cubs signed RHP Ben Wells. |
| 08/16/10 | Chicago Cubs signed LHP Brian Smith. |
| 08/16/10 | Chicago Cubs signed RHP Kevin Rhoderick. |
| 08/13/10 | Chicago Cubs optioned Micah Hoffpauir to Iowa Cubs. |
| 08/13/10 | Derrek Lee roster status changed by Chicago Cubs. |
| 08/12/10 | Chicago Cubs selected the contract of SS Darwin Barney from Iowa Cubs. |
| 08/11/10 | Chicago Cubs traded 2B Mike Fontenot to San Francisco Giants for Evan Crawford. |
| 08/11/10 | Chicago Cubs traded 2B Mike Fontenot to San Francisco Giants for Evan Crawford. |
| 08/10/10 | Welington Castillo roster status changed by Chicago Cubs. |
| 08/10/10 | Chicago Cubs placed 1B Derrek Lee on the bereavement list. |
| 08/10/10 | Chicago Cubs placed C Geovany Soto on the 15-day disabled list retroactive to August 7, 2010. Sprained right shoulder. |
| 08/10/10 | Chicago Cubs recalled Micah Hoffpauir from Iowa Cubs. |
| 08/10/10 | Chicago Cubs recalled Welington Castillo from Iowa Cubs. |
| 08/09/10 | Chicago Cubs recalled RHP Marcos Mateo from Iowa Cubs. |
| 08/09/10 | RHP Jhon Rodriguez assigned to AZL Cubs from Chicago Cubs. |
| 08/09/10 | Chicago Cubs optioned RHP Mitch Atkins to Iowa Cubs. |
| 08/08/10 | Chicago Cubs signed free agent RHP Jhon Rodriguez to a minor league contract. |
| 08/04/10 | Bryce Shafer assigned to AZL Cubs from Chicago Cubs. |
| 08/03/10 | Chicago Cubs recalled Mitch Atkins from Iowa Cubs. |
| 08/03/10 | Chicago Cubs optioned RHP Brian Schlitter to Iowa Cubs. |
| 08/03/10 | Chicago Cubs signed RHP Bryce Shafer. |
| 08/02/10 | Chicago Cubs selected the contract of Casey Coleman from Iowa Cubs. |
| 08/02/10 | Chicago Cubs selected the contract of Thomas Diamond from Iowa Cubs. |
| 08/02/10 | Chicago Cubs placed RHP Carlos Silva on the 15-day disabled list. |