Mets Roster & Staff
Transactions
| Date | Transaction |
| 07/31/10 | New York Mets signed OF Matt den Dekker. |
| 07/30/10 | New York Mets recalled Jesus Feliciano from Buffalo Bisons. |
| 07/30/10 | New York Mets placed LF Jason Bay on the 15-day disabled list retroactive to July 26, 2010. Concussion. |
| 07/28/10 | New York Mets sent RHP Fernando Nieve outright to Buffalo Bisons. |
| 07/26/10 | New York Mets placed C Rod Barajas on the 15-day disabled list retroactive to July 25, 2010. Strained left oblique. |
| 07/26/10 | New York Mets selected the contract of Mike Hessman from Buffalo Bisons. |
| 07/23/10 | RHP Chad Cordero assigned to Buffalo Bisons from New York Mets. |
| 07/23/10 | New York Mets recalled Manny Acosta from Buffalo Bisons. |
| 07/23/10 | New York Mets designated Fernando Nieve for assignment. |
| 07/22/10 | New York Mets signed free agent RHP Chad Cordero to a minor league contract. |
| 07/21/10 | New York Mets optioned Justin Turner to Buffalo Bisons. |
| 07/21/10 | New York Mets activated LHP Oliver Perez from the 15-day disabled list. |
| 07/19/10 | New York Mets optioned Ruben Tejada to Buffalo Bisons. |
| 07/19/10 | New York Mets activated 2B Luis Castillo from the 15-day disabled list. |
| 07/16/10 | New York Mets recalled Justin Turner from Buffalo Bisons. |
| 07/16/10 | New York Mets optioned Nick Evans to Buffalo Bisons. |
| 07/15/10 | SS Donnie Tabb assigned to GCL Mets from New York Mets. |
| 07/15/10 | New York Mets transferred 1B Fernando Tatis from the 15-day disabled list to the 60-day disabled list. |
| 07/15/10 | New York Mets activated CF Carlos Beltran from the 60-day disabled list. |
| 07/14/10 | New York Mets signed SS Donnie Tabb. |
| 07/12/10 | New York Mets optioned Jesus Feliciano to Buffalo Bisons. |
| 07/09/10 | New York Mets recalled Nick Evans from Binghamton Mets. |
| 07/09/10 | New York Mets optioned Ryota Igarashi to St. Lucie Mets. |
| 07/08/10 | Chase Huchingson assigned to Kingsport Mets from New York Mets. |
| 07/07/10 | New York Mets signed free agent LHP Chase Huchingson to a minor league contract. |
| 07/05/10 | New York Mets recalled Raul Valdes from Buffalo Bisons. |
| 07/05/10 | New York Mets placed 1B Fernando Tatis on the 15-day disabled list. Right shoulder AC joint sprain |
| 07/04/10 | Michael Barrett assigned to St. Lucie Mets from New York Mets. |
| 07/03/10 | RHP Brian Bruney assigned to Buffalo Bisons from New York Mets. |
| 07/03/10 | New York Mets signed free agent C Michael Barrett to a minor league contract. |
| 07/02/10 | New York Mets signed free agent RHP Brian Bruney to a minor league contract. |
| 07/01/10 | Patrick Farrell assigned to GCL Mets from New York Mets. |
| 07/01/10 | Akeel Morris assigned to GCL Mets from New York Mets. |