Career
In the 2005-2006 season, Feldhahn made an appearance in the 2. Bundesliga and an appearance the German Cup for SpVgg Unterhaching. The following season, he scored four goals in 20 appearances and two appearaces in the German Cup.
He was sent–off in a 4–0 loss to 1.
Football Club Kaiserslautern on 25 February 2007. He also appeared in six appearances for the reserve team
Foreign the 2007-2008 season, he played for Erzgebirge Aue. He scored a goal in 19 league appearances.
He also made an appearance in the German Cup.
This proved to be his only season for Erzgebirge Aue. He moved to Werder Bremen II the following season. He moved to Werder Bremen II for the 2008-2009 season where he scored three goals in 32 appearances.
He received 12 yellow cards during the season.
During the 2009-2010 season, he scored four goals in 35 appearances. He then moved to Kickers Offenbach for the 2010-2011 season.
He scored three goals in 31 league appearances and a goal in three Germa nCup appearances. During the 2011-2012 season, he made 14 league appearances.
During the 2012-2013 season, which ended up as his final season at the club, he scored two goals in 37 league appearances.
He also made four German Cup appearances during the season. He then moved to VfL Osnabrück for the 2013-2014 season. In his first season, he scored five goals in 32 league appearances and two German Cup appearances.
He was sent–off in a 3–1 loss to Rot-Weiß Erfurt on 28 September 2013.
Again, during the 2014-2015 season, he scored five goals in 32 league appearances. During the 2015-2016 season, he made a league appearance and a German Cup appearance before transferring to Bayern Munich II on 26 August 2015.