[1] After playing for Zaragoza, Ruben Sosa was transferred to Italy's S.S. Lazio, staying for four years before being sold to Internazionale, where he reached his greatest form as a football player.

[1][4] After years of success in Uruguay, Spain and Italy, Ruben Sosa played for Germany's Borussia Dortmund, winning the Bundesliga title in 1995–96.

Nicknamed El Principito (The Little Prince) by Uruguayan fans, Sosa was a quick, creative, talented, agile, and powerful left-footed forward, with good skills, control, and explosive acceleration.

[2][8][11] He is considered by many to be one of the best Uruguayan forwards of the last thirty years, alongside Luis Suárez, Edinson Cavani, Diego Forlán, Enzo Francescoli, Carlos Aguilera, Álvaro Recoba, Daniel Fonseca and Rubén Paz.

[5][12][13] Nowadays, Ruben Sosa works for Nacional as assistant coach, but he also played for a Second Division team in Uruguay, Racing Club de Montevideo in 2006.