Whiteheart signed with the Browns' practice squad Thursday.
Cleveland waived Whiteheart on Tuesday, Ian Rapoport of NFL Network reports.
Whiteheart caught three of three targets for 13 yards and a touchdown in Sunday's 20-16 loss to Las Vegas.
Cleveland signed Whiteheart from the practice squad to the active roster Saturday, Kelsey Russo of the Browns' official site reports.
Whiteheart reverted to Cleveland's practice squad Monday, per the NFL's transaction log.
Whiteheart went untargeted over 24 snaps in Sunday's 18-13 win over the Jaguars.
The Browns elevated Whiteheart from the practice squad to the active roster Saturday, in preparation for Sunday's game against the Jaguars, Brad Stainbrook of 247Sports.com reports.
Whiteheart signed a contract with the Browns' practice squad Thursday, Mary Kay Cabot of The Cleveland Plain Dealer reports.
Whiteheart was waived by the Cardinals on Tuesday, Mike Garafolo of NFL Network reports.
Whiteheart (coach's decision) is inactive Sunday against the Seahawks.