Athletics manager Bob Melvin said Friday that he's yet to decide who will be his closer this season.
ESPN's Jerry Crasnick reports that the Marlins are interested in adding a right-handed hitting first baseman and have discussed Chris Carter and Mark Reynolds, among others.
Athletics signed OF Alejandro De Aza to a minor league contract with an invitation to spring training.
Athletics designated OF Brett Eibner for assignment.
Athletics signed RHP Santiago Casilla to a two-year, $11 million contract.