Koji Murofushi
Gustafsson has been involved in coaching since he retired. Koji Murofushi won the Gold Medal at 2011 World Championships in Daegu Korea and Bronze Medal at the 2012 London Olympics with Gustafsson as his Coach. In 2016, another of his athletes, Great Britain's Sophie Hitchon, won bronze in the hammer at the 2016 Olympic Games, her country's first ever global medal in that discipline.