sentences:  Dix was a highly successful amateur athlete, setting a state record in the 100 m and trying out for the US Olympic Team at the age of eighteen.He joined Florida State University and in his first year he broke the 100 m American junior record and won at the NCAA Outdoor Championships.After a fourth-place finish at the 2005 US Championships, Dix continued with his collegiate success, setting an NCAA record of 19.69 seconds in the 200 m and coming within one hundredth of the 100 m record.