offensive tackle announced his retirement after 10 seasons Tuesday.
"I was fortunate to have been drafted by the Colts ten years ago. I was even more fortunate to spend my entire career here in Indianapolis," Castonzo said. "The Indianapolis Colts is a special organization with special ownership who fill the organization with special people at every level. I truly believe this is the best organization in all of sports. I am lucky to have been able to call myself a Colt for the past ten years and will consider myself a Colt for the rest of my life.