Orioles purchased the contract of LHP Johan Santana; placed him on the 15-day disabled list with a left shoulder injury. He'll now remain in the organization rather than opt out of his minor league deal. Santana has progressed slowly but steadily from a second shoulder capsule surgery and will begin a rehab assignment soon. He figures to use up most, if not all of his allotted rehab time but could be an option for the Orioles' rotation before the end of the month if all goes well.