Rockies signed RHP Simon Castro to a minor league contract.
White Sox sent RHP Simon Castro outright to Triple-A Charlotte.
White Sox recalled RHP Simon Castro from Triple-A Charlotte.
White Sox acquired RHP Simon Castro and LHP Pedro Hernandez from the Padres for OF Carlos Quentin.
Padres reassigned RHP Simon Castro to minor league camp.
Padres purchased the contract of RHP Simon Castro from Triple-A Portland.
The San Diego Union-Tribune expects top prospect RHP Simon Castro to get a "long look" in spring training but to ultimately begin the season at Triple-A.
Padres prospect right-hander Simon Castro tossed five shutout innings for Double-A San Antonio on Friday night.