AMERICAN FOOTBALL CONFERENCE

KANSAS CITY — Practice-squad addition: WR Junior Hemingway. Practice-squad injured: C Luke Patterson. Tryouts: CB Darius Butler; S Derrick Martin; CB Bryan McCann; CB Frank Walker.

N.Y. JETS — Contract terminated: LB Bryan Thomas. Roster addition: CB Donnie Fletcher (from Jets practice squad).

SAN DIEGO — Contract terminated: OG Reggie Wells. Roster addition: CB Greg Gatson (from Chargers practice squad).

NATIONAL FOOTBALL CONFERENCE

DALLAS — Placed on waivers: CB Mario Butler. Roster addition: LB Orie Lemon (from Cowboys practice squad).