sentences:  Competing at the 2008 US Olympic Trials in Eugene, Oregon, Dix qualified for the 2008 Summer Olympics in both the 100 and 200 m events.After recording a personal-best-equaling 9.93 seconds in the 100 m semifinals, he took second place behind Tyson Gay with a wind-assisted 9.80 seconds.He stated that his NCAA experience had helped raise his confidence and that he was less nervous than he was at the 2005 US Championships.