Stolz was offered a senior contract with Munich 1860 in 2011 but decided to play college soccer in the United States joining George Mason University.

In three years with the Bruins, Stolz played in 63 matches and scored 20 goals and recorded 22 assists.

[2] At the end of the 2014 season, Stolz was awarded the Hermann Trophy recognizing him as the top college soccer player in the country.

[3] Stolz and his UCLA team reached their first College Championship final in December 2014, but lost to Virginia on penalties.

[4][5] Stolz graduated from ESADE Business School, Barcelona on 28 October 2017 successfully finishing his master's degree in international management.