Cardinals Notes: Freese, Carpenter, Calero

The latest on the Cardinals, as third baseman David Freese makes his first spring start... Freese is now represented by CAA, tweets the agency.  Phil Tannenbaum was his previous agent.  Freese, 28 next month, is a ways off from arbitration eligibility. Chris Carpenter felt a twinge in his left hamstring during yesterday's bullpen session, reports Joe Strauss of the St. Louis Post-Dispatch.  He's looking doubtful to start Friday, but there's no timetable for his return.  Carpenter's hamstring first became a concern six days ago in a start against the Marlins.  Perhaps by the weekend the Cardinals will decide whether to explore external options with Adam Wainwright out of the season and Carpenter's status unknown.     Kiko Calero's slider looked good in his Cardinals audition, tweets SI's Jon Heyman, but the team told the righty they have a full roster.