 As a junior, Purser played for Subiaco Basketball Club and represented the Perry Lakes Hawks in the Western Australian Basketball League (WABL).He also represented Western Australia at three Australian Junior Championships, winning silver at the 2007 Under 18 National Championships in Launceston and bronze at the 2008 Under 20 National Championships in Albury.At the 2009 Under 20 National Championships in Townsville, WA finished fourth.