Brettschneider was selected by D.C. United with the third pick in the second round of the 2011 MLS Supplemental Draft.[2] He signed a contract with the team on March 3, 2011,[3] and made his professional debut on April 3, 2011, in a 4–1 loss to the Colorado Rapids.[4] Brettschneider scored his first career goal on June 11, 2011, in a 4–2 loss against San Jose Earthquakes.[5]
Brettschnider was released by United on February 3, 2012.[6] On March 6, 2012, he signed as a free agent with New England Revolution. He was released by New England following the 2012 season.[7]
Brettschnider was picked up by the Rochester Rhinos of the USL Pro league.