Ralf Kellermann
Ralf Kellermann is a German football coach and former player who was manager of VfL Wolfsburg from 2008 until 2017.
He was appointed to the position in summer 2008 and in 2011 his contract was extended until 2014.Coaching
With Wolfsburg he won the treble in 2013: the Bundesliga, the DFB-Cup and the UEFA Women's Champions League.