Reds Roster & Staff
Transactions
| Date | Transaction |
| 06/28/10 | Drew Hayes assigned to Billings Mustangs from Cincinnati Reds. |
| 06/27/10 | Cincinnati Reds recalled Bill Bray from Louisville Bats. |
| 06/27/10 | Cincinnati Reds optioned RHP Sam LeCure to Louisville Bats. |
| 06/27/10 | Cincinnati Reds signed RHP Drew Hayes. |
| 06/25/10 | Kevin Arico assigned to Dayton Dragons from Cincinnati Reds. |
| 06/24/10 | Cincinnati Reds signed RHP Kevin Arico. |
| 06/24/10 | OF Gary Matthews assigned to Louisville Bats from Cincinnati Reds. |
| 06/24/10 | Cincinnati Reds signed RHP Lucas O'Rear. |
| 06/24/10 | Cincinnati Reds signed free agent OF Gary Matthews to a minor league contract. |
| 06/21/10 | Tony Amezcua assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | Adam Muenster assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | El'Hajj Muhammad assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | Matt Leonard assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | Ismael Guillon assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | RHP Po-Cheng Chi assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | C Will Harford assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | Cincinnati Reds signed Dominic D'Anna. |
| 06/21/10 | OF Jeff Taylor assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | Stephen Hunt assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | Cincinnati Reds signed OF Stephen Hunt. |
| 06/21/10 | Robert Maddox assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | Kurtis Muller assigned to AZL Reds from Cincinnati Reds. |
| 06/21/10 | Dominic D'Anna assigned to AZL Reds from Cincinnati Reds. |
| 06/20/10 | Cincinnati Reds signed free agent OF Jeff Taylor to a minor league contract. |
| 06/20/10 | Cincinnati Reds signed CF Kurtis Muller. |
| 06/20/10 | Cincinnati Reds signed 1B Dominic D'Anna. |
| 06/20/10 | Cincinnati Reds signed LHP Matt Leonard. |
| 06/20/10 | Cincinnati Reds signed RHP El'Hajj Muhammad. |
| 06/20/10 | Cincinnati Reds signed 2B Adam Muenster. |
| 06/20/10 | Cincinnati Reds signed DH Robert Maddox. |
| 06/20/10 | Cincinnati Reds signed RHP Tony Amezcua. |
| 06/20/10 | Cincinnati Reds signed C Will Harford. |
| 06/20/10 | Cincinnati Reds signed free agent RHP Po-Cheng Chi to a minor league contract. |
| 06/20/10 | Cincinnati Reds signed free agent LHP Ismael Guillon to a minor league contract. |
| 06/19/10 | Dayne Read assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | David Vidal assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | Pat Doyle assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | Tanner Robles assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | Jonathan Kaskow assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | Chris Berset assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | Devin Lohman assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | Daniel Wolford assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | Josh Smith assigned to Billings Mustangs from Cincinnati Reds. |
| 06/19/10 | Blaine Howell assigned to Billings Mustangs from Cincinnati Reds. |
| 06/18/10 | OF Brodie Greene assigned to Lynchburg Hillcats from Cincinnati Reds. |
| 06/18/10 | Cincinnati Reds signed RHP Josh Smith. |
| 06/18/10 | Cincinnati Reds signed RHP Daniel Wolford. |
| 06/18/10 | Cincinnati Reds signed 3B David Vidal. |
| 06/18/10 | Cincinnati Reds signed C Chris Berset. |
| 06/18/10 | Cincinnati Reds signed SS Devin Lohman. |
| 06/18/10 | Cincinnati Reds signed LHP Tanner Robles. |
| 06/18/10 | Cincinnati Reds signed 1B Jonathan Kaskow. |
| 06/18/10 | Cincinnati Reds signed RHP Pat Doyle. |
| 06/18/10 | Cincinnati Reds signed OF Dayne Read. |
| 06/16/10 | Cincinnati Reds signed Brodie Greene. |
| 06/15/10 | Jordan Smith roster status changed by Cincinnati Reds. |
| 06/15/10 | Cincinnati Reds optioned RHP Enerio Del Rosario to Louisville Bats. |
| 06/15/10 | Cincinnati Reds recalled Jordan Smith from Carolina Mudcats. |
| 06/11/10 | Cincinnati Reds signed OF Ryan LaMarre. |
| 06/11/10 | Ryan LaMarre assigned to Dayton Dragons from Cincinnati Reds. |
| 06/01/10 | Cincinnati Reds optioned Carlos Fisher to Louisville Bats. |
| 06/01/10 | Cincinnati Reds signed LHP Blaine Howell. |
| 06/01/10 | Cincinnati Reds recalled Logan Ondrusek from Louisville Bats. |
| 06/01/10 | Cincinnati Reds recalled Enerio Del Rosario from Louisville Bats. |
| 06/01/10 | Cincinnati Reds placed RHP Mike Lincoln on the 15-day disabled list. Strained muscle in his right side. |