INDIANAPOLIS – The Indianapolis Colts today elevated center 
Shipley, 6-1, 309 pounds, was originally signed by the Colts on January 28, 2012. He was waived on September 10 and signed to the practice squad on September 11. Shipley saw action on the offensive line in Week 1 at Chicago.
Green, 5-10, 175 pounds, originally signed with the Arizona Cardinals as an undrafted free agent on April 26, 2010. He was waived by the Cardinals on September 5 before being added to the practice squad two days later. Green was elevated to the 53-man active roster on November 23 and was active for the final six games of the 2010 season.
Green was waived by the Cardinals on September 2, 2011 and was signed to the practice squad on September 5. He was then elevated to the active roster on December 31 and appeared in the final game of the season, making one solo tackle in the game. Green was waived by the Cardinals on August 24, 2012.
Addison, 6-3, 257 pounds, was acquired from waivers by the Colts on November 23, 2011. For his career, he has appeared in nine games, making five tackles.
Johnson, 6-1, 191 pounds, was acquired by the Colts in a trade with the Philadelphia Eagles in exchange for defensive tackle Ollie Ogbu on July 22, 2012. He was waived by the Colts on September 1 before being signed to the practice squad on September 2. For his career, Johnson has appeared in 10 games, making three tackles with the New York Giants.
