"Herm Edwards said Monday that the Chiefs are experimenting with some defensive players in unusual positions or schemes to take advantage of the team's speed. Edwards said the Chiefs are tinkering with the defense to create mismatches for offenses - and because Kansas City spent the offseason retooling with speed in mind.

"We built this defense for speed," Edwards said. "We've got some speed guys. That's the flexibility we have."

Derrick Johnson practiced at weak-side linebacker Monday, and he also might line up sometimes as a pass rusher, Edwards said. Demorrio Williams also might rush the quarterback at times.

Edwards also is experimenting with the defensive line, using end Turk McBride and tackle Tank Tyler with the first team Monday. McBride had two sacks and forced a fumble in Saturday's 27-17 loss to Arizona.

Edwards said Tyler and McBride struggled last year - they each started one game last year - because they were rookies.

"Now they're grown up," Edwards said."