Giants Roster & Staff
Transactions
| Date | Transaction |
| 09/16/09 | San Francisco Giants placed RHP Justin Miller on the 60-day disabled list. Right elbow inflammation. |
| 09/16/09 | San Francisco Giants activated LHP Randy Johnson from the 60-day disabled list. |
| 09/16/09 | San Francisco Giants sent Osiris Matos outright to Fresno Grizzlies. |
| 09/11/09 | San Francisco Giants sent Ryan Sadowski outright to Fresno Grizzlies. |
| 09/10/09 | Washington Nationals claimed Jesse English off waivers from San Francisco Giants. |
| 09/08/09 | San Francisco Giants selected the contract of Madison Bumgarner from Connecticut Defenders. |
| 09/08/09 | San Francisco Giants optioned Alex Hinshaw to Connecticut Defenders. |
| 09/08/09 | San Francisco Giants recalled Joe Martinez from Fresno Grizzlies. |
| 09/08/09 | San Francisco Giants recalled Kevin Frandsen from Fresno Grizzlies. |
| 09/08/09 | San Francisco Giants designated RHP Osiris Matos for assignment. |
| 09/07/09 | San Francisco Giants activated 2B Freddy Sanchez from the 15-day disabled list. |
| 09/05/09 | C Joel Collins assigned to Augusta GreenJackets from San Francisco Giants. |
| 09/02/09 | San Francisco Giants selected the contract of Buster Posey from Fresno Grizzlies. |
| 09/02/09 | San Francisco Giants selected the contract of LHP Dan Runzler from Fresno Grizzlies. |
| 09/02/09 | Pittsburgh Pirates traded C Joel Collins to San Francisco Giants. |
| 09/02/09 | San Francisco Giants designated LHP Jesse English for assignment. |
| 09/02/09 | San Francisco Giants designated RHP Ryan Sadowski for assignment. |
| 09/01/09 | San Francisco Giants signed free agent RHP Brad Penny. |
| 09/01/09 | San Francisco Giants activated CF Andres Torres from the 15-day disabled list. |
| 09/01/09 | San Francisco Giants recalled 1B Jesus Guzman from Fresno Grizzlies. |
| 09/01/09 | San Francisco Giants recalled John Bowker from Fresno Grizzlies. |
| 09/01/09 | San Francisco Giants activated 1B Rich Aurilia from the 15-day disabled list. |
| 09/01/09 | San Francisco Giants recalled Waldis Joaquin from Fresno Grizzlies. |
| 09/01/09 | San Francisco Giants recalled 2B Emmanuel Burriss from Fresno Grizzlies. |