Cleveland signed Whiteheart from the practice squad to the active roster Saturday, Kelsey Russo of the Browns' official site reports.
Whiteheart was elevated from the practice squad for Week 2 against the Jaguars, during which he played 22 snaps on offense without drawing a target. With David Njoku (ankle) ruled out for a second straight week, Whiteheart will join the active roster and serve as the No. 2 tight end behind Jordan Akins for Sunday's game against the Giants.