Colts ink Davis, Federkeil and Ball
Earlier they signed defensive tackle Daniel Muir.
All were contributors to the 2008 Colts.
Davis was claimed off waivers by the Colts from Detroit prior to the 2008 regular season. He appeared in six games with the Colts last season, starting three of the final four games at middle linebacker, and totaling 26 tackles, 16 solo.
Federkeil joined the Colts as an undrafted free agent from the University of Calgary in 2006. Heading into his fourth season with Indianapolis, Federkeil has appeared in 22 career games, including three starts. Those all came last year at right guard. He also appeared as a reserve at right tackle and on special teams.
Ball was a practice-squader for much of last season, but was on the active roster and played in the Colts' regular-season finale -- a game with no playoff implications for either team -- against Tennessee, totaling 83 yards on 13 carries.