Complex sentence: Núñez began playing in the Rosario Central touth development system, he progressed to make his first team debut on 9 March 2007 in a 2-0 away defeat to Independiente.
Split into simpler sentences: Núñez began playing in the Rosario Central touth development system. He progressed to make his first team debut on 9 March 2007 in a 2-0 away defeat to Independiente.