Apparently, Buriss was on the roster but must not have played. Then he was released and signed to the P.S.

Packers news release:

PACKERS SIGN QB HENRY BURRIS TO PRACTICE SQUAD, DROP CB HURLEY TARVER

posted 12/1/01
Henry Burris
Henry Burris

The Green Bay Packers have signed quarterback Henry Burris to the team's practice squad, GM/Head Coach Mike Sherman announced today.

Burris had been waived from the club's 53-man roster Friday to make room for safety Matt Bowen, a former St. Louis Ram signed as a free agent.