[2] In 2003, he was also named the NSCAA Pennsylvania State Player of the Year and chosen as an EA Sports All-American.

Costanzo started college soccer at Pennsylvania State University where he was named the 2004 Big Ten Freshman of the Year.

[8] Having not been drafted by Major League Soccer Costanzo signed with Minnesota Thunder on February 26, 2009.

[9] He made his professional debut on April 11, 2009, as a second-half substitute in Minnesota's 2009 season-opening game against the Carolina RailHawks.

[10] Costanzo was on the 2010–11 roster of the Baltimore Blast indoor soccer team, but appeared in no games.