Complex sentence: Gregg Kevin Carr, M.D. (born March 31,1962) is currently an orthopedic surgeon and a former professional American football linebacker in the National Football League (NFL) where he played four seasons for the Pittsburgh Steelers (1985--1988).
Split into simpler sentences: Gregg Kevin Carr (born March 31,1962) is a former professional American football linebacker in the National Football League. He played four seasons for the Pittsburgh Steelers (1985--1988).