Robert Samuel Rojas Chávez (born 30 April 1996), is a Paraguayan professional footballer who plays as a centre-back or right-back for Vasco da Gama and the Paraguay national team. Club career Rojas, who arrived in Guaraní when he was 17 years old acknowledged that he was about to leave football more than once because he missed his family, played as a right back for most of his youth training, but in his second year in the Asunción team he was run for playing as a centre back. Therefore, it is characterized by its great speed. The one born in the small town of Peguahomi became a key part of the Cacique team, especially since Julio César Cáceres - his great referent in the position- was suspended by doping at the beginning of March and a place was left vacant in the rear. The defender, is one of the young player with greater projection in the football of his country. On 18 January 2019, Rojas joined Argentine Primera División club River Plate, signing a four year contract. International career On 2 March 2019, Rojas received a call-up to the Paraguay national team from Eduardo Berizzo ahead of that month's friendlies with Peru and Mexico. He made his international debut on 5 September 2019, in a 2–0 loss to Japan.