Cabañas started his career at Paraguayan club 12 de Octubre, where he was promoted to the first division by then coach Alicio Solalinde, scoring a hugely impressive 17 goals in hisfirst season. He moved to a different team, Guaraní, where he had a brief stint before moving to Audax Italiano of Chile. In the 2003 Apertura tournament of the Chilean Primera División Cabañas netted animpressive 18 goals and was the top goalscorer.
 Years in Mexico
Afterwards, he joined Jaguares of Mexico from Audax Italiano before the Mexican 2003 Apertura tournament. That season,Cabañas went on to play in 18 games for the team, scoring five goals. He came into his own in the 2004 Clausura however, as he scored 15 goals in 20 games for the club. He would lead the club in goals againin the 2004 Apertura, with eight in 16 matches.
Following the Clausura 2006 season in which Cabañas won his first goalscoring crown in the Mexican League, he attracted the attention of ClubAmérica, one of the most important clubs in the country, and was signed by the Mexico City squad prior to the Apertura 2006 season.
Cabañas became América's most prolific goalscorer for 2007, finishing upthe first half of the year with an impressive 19 goals between 2007 Copa Libertadores (in which he became the top-scorer with 10 goals) and the Primera División de México. He started the second halfof the year with a single goal in the North American SuperLiga, then scored 4 more goals in the 2007 Copa Sudamericana, and has scored 9 more in the Primera División de México, bringing his year'stotal with the club to 33 goals. His top form in 2007 earned him the Paraguayan Footballer of the Year and South American Footballer of the Year awards.
For 2008, Cabañas has started where he left offin 2007. He has scored 3 goals in the 2008 InterLiga, scored 8 in the 2008 Copa Libertadores (in which, for a consecutive second time, he became the top-scorer), and has scored 6 more goals in...