 Christensen was claimed off waivers by the New York Giants but only played in one game and lasted two weeks with the team, before being released to make room for wide receiver Dwight Scales.After being unclaimed, he was signed by the Oakland Raiders in 1979 and became a key player on special teams, which included the role of long snapper.Being the son of a college professor, he was scholarly and enjoyed the mastery of words, he also quoted famous authors and volunteered on different occasions poems, some of which were written by him.