Posted by ESPN.com's Bill Williamson
Both players bring valuable NFL experience to one of the young Chiefs' greenest areas. Macklin is an eight-year veteran who has played in 116 games for three teams. He was cut by St. Louis this summer. Colclough was a second-round pick of Pittsburgh in 2004.He has played in 36 games, most recently with Cleveland last season. He was cut by Carolina this summer.
Kansas City also signed defensive end Wallace Gilberry. The former Alabama star was on the New York Giants' practice squad. The Chiefs also signed running back Omar Cuff to the practice squad. The former Delaware standout was previously with Tennessee as an undrafted free agent.