Catcher Carlos Santana, who is on the disabled list with a mild concussion, caught a bullpen session and took batting practice Sunday. Indians manager Manny Acta said Santana is "feeling good," and that the club is optimistic he will be available for the Detroit series beginning Tuesday at Comerica Park. Acta said Santana might get rehab at-bats tonight for the Lake County Captains, who play host to Fort Wayne. Acta said he is fairly certain Santana has passed all the tests mandated by Major League Baseball for activation after a concussion.