Simplify the following text for a Grade 11 native English-speaking person.
Original: Amani Toomer ( born September 8 , 1974 in Berkeley , California ) is a retired American football wide receiver that played for the New York Giants and Kansas City Chiefs of the National Football League .
Simplified: Amani Toomer ( born September 8 , 1974 in Berkeley , California ) is a retired American football wide receiver who played at the National Football League .