Simplify the following text for a Grade 9 native English-speaking person.
Original: Dwight Hicks ( born April 5 , 1956 ) is a former professional American football player who played defensive back for the Toronto Argonauts in 1978 , the San Francisco 49ers from 1979 to 1985 , and for the Indianapolis Colts in 1986 .
Simplified: He played the defensive back position for the Toronto Argonauts in 1978 . He also played in the National Football League ( NFL ) for the San Francisco 49ers from 1979 to 1985 and for the Indianapolis Colts in 1986 .