Posted by ESPN.com's Bill Williamson
The Broncos and the Chiefs shuffled their rosters Tuesday.
Haggan has spent the past five seasons with Buffalo and he played in 65 career games for the Bills. He was signed because weakside linebacker D.J. Williams is out for the next month with a knee injury. Pope and Rogers were on Denver's practice squad.
In Kansas City, activated wide receiver Kevin Robinson and tight end Michael Merritt. Both players are rookies. Robinson was a sixth-round pick from Utah State and Merritt was a seventh-round pick from Central Florida. Both players have been on injured list.
The Chiefs could still try to sign a running back with Kolby Smith out for the season with a knee injury.