sentences:  He took fourth place in the final and set a new 60 m indoor best of 6.58 seconds.Event winner Ivory Williams was disqualified after testing positive for marijuana and Dix was upgraded to third.He opened his outdoor season at the Seminole Twilight meet in May, recording 9.98 seconds in the 100 m and 19.89 seconds for the 200 m. He began to participate in Diamond League meetings, competing on the European circuit for the first time.