Posted by ESPN.com's Bill Williamson
Huge news in the AFC West:
The Chiefs announced they have traded for New England quarterback Matt Cassel and linebacker Mike Vrabel for their second-round pick, which is the No. 34 pick in the draft.
The Denver Broncos just announced the signing of Philadelphia Pro Bowl safety Brian Dawkins. Denver just signed Cleveland linebacker Andra Davis and has now inked nine players in free agency.
Much more to come.