Simplify the following text for a Grade 9 native English-speaking person.
Original: Marcelo GonÃ alves Costa Lopes , usually known simply as GonÃ alves ( born on February 22 , 1966 in Rio de Janeiro , Rio de Janeiro state ) is a Brazilian football ( soccer ) central defender revealed by Flamengo in 1987 .
Simplified: Marcelo GonÃ alves Costa Lopes ( born 22 February , 1966 ) is a former Brazilian football player .