Alberto Contrera

Contrera's career began with Olimpia.[1][2] He made his professional debut during the 2009 Paraguayan Primera División season, before scoring his first goals in a 0–3 win versus 3 de Febrero during 2010.[1][3] He went on to score three goals in thirty-nine appearances in his first four seasons with Olimpia.[1][4] In July 2012, Contrera was loaned to Rubio Ñu.[5] One goal in fourteen matches followed.[1] He returned to Olimpia for the 2013 campaign, eventually making six further appearances for the club.[1] Contrera departed on loan again in 2013 to join fellow Paraguayan Primera División team Sportivo Luqueño.[6]

After fourteen matches for Sportivo Luqueño in 2013, Contrera left Olimpia to spend 2014 with General Díaz.[1] He marked his second start for General Díaz with two goals in a 3–2 win against 12 de Octubre on 15 August.[1] On 1 January 2015, Guaraní signed Contrera.[7] He scored five goals in twenty-five appearances in his debut season as Guaraní finished second.[1] In his first three seasons with the club, Contrera netted eight goals in fifty-six games.[1][8] July 2017 saw Contrera leave Paraguayan football for the first time to play in Argentina with Patronato on loan.[9] His first match came versus San Martín on 27 August.[1][10]

Contrera won three caps for the Paraguay U20s at the 2011 South American U-20 Championship in Peru, the first of which arrived during a 4–2 defeat to Brazil on 17 January 2011.[1][11]