In 2003 and 2004, Sadler played for the amateur South Jersey Barons. On March 8, 2006, the St. Louis Steamers of the Major Indoor Soccer League selected Sadler in the third round of the MISL College Draft.
From 2003 to 2004, Sadler played for an amateur team. On March 8, 2006, the St. Louis Steamers, part of a professional league, selected Sadler in the MISL College Draft's third round.