The 2014 MLS Rookie of the Year finalist made 22 appearances (21 starts) in his second MLS season and scored the first goals of his career. He scored for the first time at Alajuelense in Costa Rica in the quarterfinals of the 2014-15 Scotiabank CONCACAF Champions League. Birnbaum also scored his first career regular season goal against Toronto FC on June 6, then tallied a game-tying goal in a 1-1 draw at Colorado on Sept. 12. He also made appearances in the Lamar Hunt U.S. Open Cup and the 2015-16 Scotiabank CONCACAF Champions League.
After starting the year as a reserve, Birnbaum finished the season as an MLS Rookie of the Year finalist, starting in the final 21 games for United after replacing the injured Jeff Parke on June 7 against the Columbus Crew at FedEx Field. The Irvine, Calif., native became the fifth D.C. United rookie of the year finalist in six seasons, joining Chris Pontius (2009 finalist), Andy Najar (2010 Rookie of the Year), Perry Kitchen (2011 finalist) and Nick DeLeon (2012 finalist).
Birnbaum was one of three team captains for Cal in 2013. He was a Missouri Athletic Club Herman Trophy Semifinalist, named a NSCAA First Team All-American, NSCAA First Team All-Far-West Team, College Soccer News First Team All-American selection, All Pac-12 first team, Pac-12 All-Academic honorable mention and Soccer News Net College Boot Player of the Year Finalist. He started and played 19 games at central defense for the Bears and finished the season with 10 goals and one assist. Birnbaum helped lead the Bears to the NCAA tournament quarterfinals in 2013. Started in all 20 games for the Bears in 2010 and finished the season with one goal and five assists.
YOUTH INTERNATIONAL EXPERIENCE
Birnbaum competed for the U.S. U-18 and U-20 National Team squads in tournaments in Portugal and Mexico in 2008. He was a part of the U.S. squad that competed against Manchester United in the 2008 Milk Cup Final. Birnbaum won a silver medal with the U.S. team in the 2012 Pan Am Maccabi games in Brazil.
Selected in the first round (2nd overall) of 2014 MLS SuperDraft.