Chiefs LB Andy Studebaker will make his first career NFL start on Sunday against the Steelers.
Studebaker will start at OLB in place of the injured Mike Vrabel (knee). The Chiefs signed him off the Eagles practice squad last November after the Eagles drafted him in the sixth round out of D-III Wheaton College in 2008.
Chiefs OLB Mike Vrabel is out indefinitely with a knee injury.
Beat reporter Kent Babb believes it's serious, twittering that he'd "count (Vrabel) out for Sunday. And the next Sunday. And maybe the next Sunday, too." Vrabel has one sack in nine starts, so his loss isn't significant.

Chiefs RB/PR Dantrell Savage left Sunday's game against the Raiders with an ankle injury and is questionable to return.
Savage muffed a punt to turn the ball over early in the game and also dropped an easy third-down pass which would have resulted in a first down. When Savage came off of the field after the drop, coach Todd Haley said to him, "You don't want to play today, do you?" Maurice Leggett will handle punt returns.
Chiefs coach Todd Haley confirmed that Bobby Wade will be active this week thanks to Dwayne Bowe's suspension.
Wade has been inactive the last two weeks as he lost his slot job to Lance Long and Chris Chambers was signed. Haley said that it was just a numbers game, but don't look for much production out of Wade. The clear beneficiaries of Bowe's absence will be Long and Chambers.
Chiefs LB Mike Vrabel left Sunday's game against the Raiders with an apparent left knee injury.
Vrabel looks questionable to return and was replaced by Andy Studebaker.
Chiefs signed FB Tim Castille, formerly of the Cardinals.
Castille is familiar with Todd Haley's offense from their time together in Arizona. He's not a threat to Mike Cox's starting job.

NFL suspended Chiefs WR Dwayne Bowe four games for violating the league's policy on performance enhancing substances.
The suspension begins immediately and will keep Bowe out until Week 15. Bowe reported to spring workouts 30 pounds overweight, and ESPN's Adam Schefter "gathers" that Bowe took a diuretic to shed the extra pounds. He spent much of the early season in coach Todd Haley's doghouse, and the suspension may alter the team's long-term plans for him. With Bowe returning in time for many fantasy playoff games, he's worth keeping on rosters.
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