Simplify the following text for a Grade 8 native English-speaking person.
Original: SÃ rgio Ricardo de Jesus Vertello known as SÃ rgio or SerjÃ # o ( big SÃ rgio ) ( born 19 September 1975 in SÃ # o Paulo ) is a former Brazilian footballer .
Simplified: SÃ rgio Ricardo de Jesus Vertello ( born 19 September 1975 ) is a former Brazilian football player .