CHICAGO -- The Cleveland Indians placed Carlos Santana on the seven-day disabled list with a concussion and infielder Nick Swisher on the 15-day DL with a left knee injury on Tuesday.
Cleveland also designated right-hander Blake Wood for assignment.
To fill two spots on the 25-man roster, the Indians selected the contract of catcher George Kottaras and recalled infielder Jesus Aguilar from Triple-A Columbus.
Both players joined the team before Tuesday night's game with the Chicago White Sox.
Santana was hit in the head by a foul ball on Sunday in Baltimore. He was originally in the lineup for the opener of the series in Chicago on Monday, but was scratched just before game time after experiencing concussion-like symptoms.
This is his third stint on the DL in the major leagues and the second time he's been on the concussion list.