Both Gert Bo Jacobsen and Greg Haugen were professionals at what sport?
Greg Haugen Greg Lee Haugen (born August 31, 1960) is a retired American boxer. Haugen was champion at both the Lightweight and Light-welterweight classes.
Johan Cruyff Institute The Johan Cruyff Institute is an educational institution, founded by Johan Cruyff, aimed at educating athletes, sport and business professionals in the field of sport management.