Simplify the following text for a Grade 6 native English-speaking person.
Original: Ã nderson CorrÃ a Polga ( born February 9 , 1979 in Santiago , Rio Grande do Sul ) is a Brazilian footballer who plays for Sporting Clube de Portugal as a central defender .
Simplified: Ã nderson Polga ( born 9 February , 1979 ) is a Brazilian football player . He plays for Sporting Portugal .