By Cory J. Bonini on April 28, 2011
Fantasy analysis: The Colts made a very smart pick of an intelligent player in Castonzo. Charlie Johnson and the rookie should battle in camp for the left tackle gig. If Castonzo holds up against Dwight Freeney and Robert Mathis in practice, it's reasonable to believe he will win the job to protect Peyton Manning's blind side.
He may not necessarily be an upgrade just yet, but Castonzo should be an improvement over Johnson as he gains comfort in the system. Fantasy owners should consider much of the same from the Colts' offense if Castonzo starts, as they wouldn't put Manning in jeopardy if they weren't confident in the rookie's ability to keep No. 18 clean.