It is named after Belfort Duarte because in a game he mentioned to the referee that he committed a foul in his club's penalty area.
[1] The award was created on August 16, 1945, by the now defunct Brazilian National Sports Council, and instituted on January 1, 1946,[2] and it is given to the amateur or professional footballers[2] who completed at least two hundred games in at least a ten-year career without being booked with a red card.
[1] Those players were awarded with a certificate, a medal and a card granting free entrance to every stadium in Brazil.
This measure aimed to prevent situations like of the full back Everaldo (world champion with the Brazilian team in 1970), who three months after winning the award punched a referee and was suspended for a year.
[3] Since 2008, the Prêmio Belfort Duarte is given by Rede Globo, awarding the player with the cleanest disciplinary record during the Campeonato Brasileiro Série A.