Referee since 1979, refereed national divisions since 1990.

National referee educator on rules knowledge, mechanics, and mental aspects of officiating. Referee tutor for Western Region. Chairman Referee Committee Western Region since 2001.

Federation qualified educator for coach education. Assistant-coach/trainer The Netherlands national team U18 Men 2007/2008.

Manager Masterplan Officiating and project ‘Sportsmanship & Respect’ for The Netherlands Basketball Federation. Co-developer national qualification structure sport officials at The Netherlands  Olympic Committee.

Master Sports Marketing and Communication, teacher Sportmarketing.