Anthony Castonzo will be protecting Andrew Luck's blind side for at least two more seasons. To no surprise, the Indianapolis Colts picked up Castonzo's fifth-year contract option of $7.438 million for 2015, the NFLPA confirmed Monday on its website. Read more http://espn.go.com/nfl/story/_/id/1...-indianapolis-colts-5th-year-option-exercised