July 20, 2012: Houston Astros
Traded RHP Brandon Lyon, LHP J.A. Happ and RHP David Carpenter to Toronto Blue Jays
; Toronto Blue Jays
Traded RHP Francisco Cordero and LF Ben Francisco to Houston Astros
; Bluefield Blue Jays Traded RHP Joe Musgrove to Greeneville Astros; Dunedin Blue Jays Traded RHP Asher Wojciechowski to Corpus Christi Hooks; Lansing Lugnuts Traded LHP David Rollins to Lexington Legends and Lansing Lugnuts Traded C Carlos Perez to Lancaster JetHawks.