No — there is no reliable public source that currently confirms Jonathan Cooper is left-handed.

Jonathan Cooper is a former American football offensive guard. He was a highly touted prospect out of the University of North Carolina, where he earned All-American honors.

Cooper was drafted seventh overall by the Arizona Cardinals in the 2013 NFL Draft, making him the highest-drafted offensive guard since 1997. His professional career was marked by injuries.

Throughout his NFL career, Cooper played for several teams, including the New England Patriots, Cleveland Browns, Dallas Cowboys, San Francisco 49ers, and Washington Redskins.

He was known for his athleticism and strength as an interior offensive lineman. His career concluded after the 2018 season, marked by a struggle to stay healthy and on the field consistently.