A striker, Roberto Nanni plays professional football in his home country, Argentina. Nanni began his career at Velez Sarsfield where he played over 60 games and scored 35 times. Since then, he has played in a number of big names in Europe like FC Dinamo Kiev, in 2003; UD Almeria, in 2004; Siena Calcio in 2005; Messina, in 2006 and also Crotone. He played for these clubs on loan, after being recruited by FC Dinamo Kiev in 2003.
In January, he returned from FC Dinamo Kiev to play for the club where he began his professional career, Velez Sarsfield.