Athletics Roster & Staff
Transactions
| Date | Transaction |
| 09/19/09 | Oakland Athletics recalled Jon Meloan from Sacramento River Cats. |
| 09/19/09 | Oakland Athletics recalled Henry Alberto Rodriguez from Sacramento River Cats. |
| 09/19/09 | Oakland Athletics recalled Travis Buck from Sacramento River Cats. |
| 09/18/09 | Oakland Athletics placed RHP Vin Mazzaro on the 60-day disabled list retroactive to September 8, 2009. Right shoulder tendinitis. |
| 09/18/09 | Oakland Athletics selected the contract of Matt Carson from Sacramento River Cats. |
| 09/11/09 | Oakland Athletics selected the contract of Eric Munson from Sacramento River Cats. |
| 09/11/09 | Oakland Athletics transferred LHP Dallas Braden from the 15-day disabled list to the 60-day disabled list. rash on left foot |
| 09/04/09 | Oakland Athletics recalled Clayton Mortensen from Sacramento River Cats. |
| 09/02/09 | Oakland Athletics claimed RHP Jon Meloan off waivers from Pittsburgh Pirates. |
| 09/02/09 | Grant Green assigned to Stockton Ports from Oakland Athletics. |
| 09/02/09 | Jon Meloan assigned to Sacramento River Cats from Oakland Athletics. |
| 09/02/09 | Oakland Athletics activated 1B Bobby Crosby from the 15-day disabled list. |
| 09/01/09 | Oakland Athletics recalled Dana Eveland from Sacramento River Cats. |
| 09/01/09 | Oakland Athletics selected the contract of Brad Kilby from Sacramento River Cats. |
| 09/01/09 | Oakland Athletics recalled Jerry Blevins from Sacramento River Cats. |