Chiefs ILB Derrick Johnson (Achilles') and DE Mike DeVito (Achilles') are participating in voluntary workouts.
Chiefs chairman Clark Hunt said ILB Derrick Johnson's roster spot is safe.
Chiefs placed ILB Derrick Johnson on injured reserve with a torn Achilles' tendon, ending his season.
Coach Andy Reid confirmed ILB Derrick Johnson (torn Achilles') will miss the remainder of the season.
NFL Network's Ian Rapoport reports the Chiefs believe ILB Derrick Johnson has a torn Achilles' tendon.
Chiefs ILB Derrick Johnson was carted off the field in Sunday's Week 1 game with an Achilles' tendon injury.
New DC Bob Sutton plans to instill a more aggressive attitude into a Chiefs defense that produced a league-low 13 turnovers last season.
Chiefs ILB Derrick Johnson (groin) is active for Sunday's Week 5 game against the Ravens.
The Chiefs are confident ILB Derrick Johnson (ankle) will be available for their Week 1 game against Atlanta.
Chiefs ILB Derrick Johnson suffered an ankle injury that "could be significant" in Thursday's preseason finale.
Chiefs ILB Derrick Johnson set a franchise record with 179 tackles in 2011 and made his first career Pro Bowl.
Chiefs ILB Derrick Johnson already has a career-high 126 tackles through 15 games.
Chiefs ILB Derrick Johnson recorded a career-high 17 tackles while knocking down four passes against the Rams in Week 15.
Chiefs agreed to terms with ILB Derrick Johnson on a five-year, $34 million extension. The deal includes $15 million guaranteed.