Gold-medal sprint contender Christian Coleman’s Olympic prospects might be in jeopardy after three missed drug tests, two people familiar with the case told The Associated Press.
The “whereabouts failures” are said to have happened over 12 months, which can be treated as a positive test and doping violation.
The people spoke on condition of anonymity Thursday because cases are considered confidential.
The 23-year-old Coleman is the reigning national champion at 100 metres.