Kansas City Chiefs linebacker Mark Simeoneau announced his retirement from professional football on Thursday.

Kansas City Chiefs linebacker Derrick Johnson has agreed to a five-year contract extension, Adam Caplan of FOXSports.com....

The Kansas City Chiefs have re-signed rookie wide receiver Jeremy Horne to the practice squad, a league source said....

ESPN's Adam Schefter reports the Kansas City Chiefs have traded defensive end Alex Magee to the Tampa Bay Buccaneers for a conditional draft choice.

Kansas City Chiefs defensive lineman Shaun Smith has been fined $10,000 by the NFL for his "groin strike" on San Francisco 49ers offensive tackle...

As noted by FOXSports.com's Adam Caplan, Kansas City Chiefs linebacker Andy Studebaker has signed a three-year contract extension.

In advance of Tuesday's 4pm ET deadline to trim their roster to 75 players, the Kansas City Chiefs announced thatfour players have been waived on...

The Kansas City Chiefs have struck an agreement with the Missouri Lottery on a Chiefs-themed scratch ticket, the team announced on Wednesday.

The Kansas City Chiefs have signed rookie free agent quarterback Bill Stull, the team announced on Tuesday.

Meant to blog this on Friday, but Adam Teicher of the Kansas City Star ripped into the Kansas City Chiefs for restricting media access to the team.

The Kansas City Chiefs announced that they have signed linebacker John Russell.

Kansas City Chiefs first-round safety Eric Berry announced on Twitter that his deal was done.

The Kansas City Chiefs announced that they have signed third-round guard Jon Asamoah. Reports last week that Asamoah had signed were premature.

The Kansas City Chiefs have signed third-round tight end Tony Moeaki.