Career
College and amateur
Pizarro played college soccer for Lincoln Memorial University. His style of attacking football was adored by fans and was extremely successful. The reason for this is growing up Nelson never played 11 aside soccer instead learning the game at his families indoor and 5 aside facility in Florida.
He played with adults at a very young age and became a very technically gifted player with strength to match.
He regularly scored goals in big matches and could be utilized by the coaching staff in many positions including central defence and as a wide midfielder or full back. However, his most effective position is an attacking midfielder due to his technical ability and effective runs into the box.
During his college years Pizarro also played in the USL Premier Development League for Ventura County Fusion,
Professional
Pizarro was signed to a developmental contract by Kansas City Wizards on April 30, 2008 after impressing head coach Curt Onalfo and General Motors Peter Vermes during a two-day open tryout. He made his full professional debut for the Wizards on 8 July 2008, in a United States Open Cup quarter final game against the Seattle Sounders.
He was waived by the Wizards in May, 2009.
He later signed with USL-1 side Miami Football Club, and played 8 games for the Blues before being released at the end of the season. Having been able to sign with a professional club elsewhere, Pizarro moved to California to play an exhibition season with the reborn San Diego Flash in 2010, in preparation for their return to full competition in 2011.