| Latest Transactions |
| DATE | TRANSACTION |
| November 21, 2009 | Named John McLaren bench coach, Jim Lett bullpen coach and Dan Radison first-base coach. |
| November 20, 2009 | Purchased the contracts of RHP Juan Jaime from Hagerstown (SAL) and LHP Atahualpa Severino and LHP Aaron Thompson from Harrisburg (EL). |
| November 19, 2009 | Named Davey Johnson senior advisor to the general manager. |
| November 17, 2009 | Named Bryan Minniti assistant general manager and Jay Sartori as director of baseball operations. |
| November 13, 2009 | Named Jim Riggleman manager. |
| November 6, 2009 | Declined 2010 contract option on OF Austin Kearns. |
| November 6, 2009 | Claimed LHP Doug Slaten off waivers from Arizona. |
| November 4, 2009 | Named Ron Schueler special advisor to the general manager. Promoted Bill Singer to director of professional scouting. |
| October 28, 2009 | Named Casey McKeon director of player procurement and Jay Robertson special assistant to the general manager. |
| October 16, 2009 | Named Roy Clark vice president of player personnel, Johnny DiPuglia director of Latin American operations and Doug Harris director of player development. Promoted Kris Kline to director of scouting. |
| September 17, 2009 | Acquired C Jamie Burke from Seattle for cash considerations. Placed C Jesus Flores on the 60-Day DL. |
| September 11, 2009 | Claimed LHP Jesse English off waivers from San Francisco. Designated C Luke Montz for assignment. |
| September 8, 2009 | RP Jorge Sosa released; SP Scott Olsen transferred to 60-day DL; SS Ian Desmond called up from minors; SP Ross Detwiler called up from minors; SP Marco Estrada called up from minors; RP Logan Kensing purchased from minors; RP Zack Segovia purchased from minors |
| September 4, 2009 | RP Victor Garate activated |
| August 31, 2009 | CF Justin Maxwell called up from minors |
| August 28, 2009 | CF Nyjer Morgan placed on 15-day DL; SP Jordan Zimmermann transferred to 60-day DL |
| August 26, 2009 | Signed Pitcher Livan Hernandez; optioned pitcher Collin Balester to Syracuse of the International League (AAA).; SP Livan Hernandez signed as free agent; SP Collin Balester sent to minors |
| August 25, 2009 | 1B Dmitri Young transferred to 60-day DL |
| August 18, 2009 | Designated pitcher Logan Kensing for assignment; purchased the contract of first baseman Mike Morse from Syracuse of the International League (AAA). |
| August 11, 2009 | Agreed to terms with infielder Jean Valdez, outfielder Jose Norberto and pitchers Cleto Brazoban, Vidal Paredes, and George Rosa on professional contracts. |
| August 8, 2009 | Traded second baseman Anderson Hernandez to the New York Mets for second baseman Greg Veloz; recalled pitcher Saul Rivera from Syracuse of the International League (AAA). |
| August 5, 2009 | Placed outfielder Austin Kearns on the 15-Day Disabled List, retroactive to Aug. 4; recalled outfielder Jorge Padilla from Syracuse of the International League (AAA). |
| August 1, 2009 | Recalled outfielder Elijah Dukes from Syracuse of the International League (AAA); purchased the contract of pitcher Jorge Sosa from Syracuse. |
| July 28, 2009 | Agreed to terms with pitcher Andrew Weaver. |
| July 24, 2009 | Placed pitcher Jordan Zimmermann on the 15-day disabled list, retroactive to Sunday; recalled pitcher Collin Balester from Syracuse of the International Leauge (AAA). |
| July 20, 2009 | Placed pitcher Scott Olsen on the 15-day disabled list, retroactive to July 11; designated pitcher Julian Tavarez for assignment; purchased the contracts of pitchers J.D. Martin and Logan Kensing from Syracuse of the International League (AAA). |
| July 16, 2009 | Recalled pitcher Garrett Mock from Syracuse of the International League (AAA). |
| July 14, 2009 | Fired manager Manny Acta; named Jim Riggleman interim manager and Pat Corrales bench coach; optioned pitcher Ross Detwiler to Syracuse of the International League (AAA). |
| July 5, 2009 | Recalled pitcher Jason Bergmann from Syracuse of the International League (AAA); designated pitcher Jesus Colome for assignment. |
| July 4, 2009 | Optioned outfielder Elijah Dukes to Syracuse of the International League (AAA). |
| June 30, 2009 | Activated pitcer Scott Olsen from the 15-day disabled list; optioned pitcher Shairon Martis to Syracuse of the International League (AAA); agreed to terms with second baseman Jeffrey Kobernus, pitchers Chad Jenkins Daniel Rosenbaum, Brandon King, Matt Swynenberg and Shane McCatty and shortstop Kyle Breault. |
| June 29, 2009 | Traded outfielder Ryan Langerhans to the Seattle Mariners for infielder Mike Morse; activated pitcher Scott Olsen from the 15-day disabled list; optioned pitcher Shairon Martis to Syracuse of the International League (AAA). |
| June 21, 2009 | Recalled pitcher Tyler Clippard from Syracuse of the International League (AAA). |
| June 21, 2009 | Activated outfielder Josh Willingham from the bereavement list; optioned outfielder Corey Patterson to Syracuse of the International League (AAA). |
| June 16, 2009 | Activated pitcher Kip Wells from the 15-day disabled list; optioned pitcher Jason Bergmann to Syracuse of the International League (AAA). |
| June 16, 2009 | Optioned pitcher Tyler Clippard to Columbus of the International League (AAA). |
| June 13, 2009 | Recalled outfielder Corey Patterson from Syracuse of the International League (AAA); placed outfielder Josh Willingham on the bereavement list; transferred pitcher Terrell Young to the 60-day disabled list. |
| June 10, 2009 | Signed pitcher Drew Storen. |
| June 2, 2009 | Activated outfielder Elijah Dukes from the 15-day disabled list; placed pitcher Kip Wells on the 15-day disabled list, retroactive to Sunday; fired pitching coach Randy St. Claire; named Steve McCatty pitching coach. |
| May 30, 2009 | Recalled shortstop Alberto Gonzalez from Syracuse of the International League (AAA); optioned outfielder Justin Maxwell to Syracuse. |
| May 30, 2009 | Purchased the contract of pitcher Mike MacDougal from Syracuse of the International League (AAA); optioned catcher Luke Montz to Harrisburg of the Eastern League (AA). |
| May 28, 2009 | Recalled catcher Luke Montz from Harrisburg of the Eastern League (AA); designated pitcher Daniel Cabrera for assignment. |