Joshua Ballinger Lippincott Rosen is the son of Charles Rosen, an orthopedic spine surgeon, and Liz Lippincott, a former journalist. Rosen’s father is Jewish and was a nationally ranked ice skater who almost qualified for the Winter Olympics in the 1970s, and his mother is a Quaker who was the captain of the Princeton lacrosse team.
He played college football for the UCLA Bruins and was drafted by the Cardinals in the first round of the 2018 NFL Draft.
Rosen made his first regular season appearance in Week 3 of 2018, replacing starter Sam Bradford with 4:31 remaining against the Chicago Bears and the Cardinals. On September 24, the Cardinals named Rosen the starting quarterback for Week 4.
He is nicknamed “Chosen Rosen” and “the Chosen One”.