Olympic sprinter Marvin Bracy-Williams has agreed to a 45-month doping ban in a case investigated by federal drug-enforcement authorities that the head of the U.S. Anti Doping-Agency said has led to “several impactful outcomes.”

USADA said Monday the case against the 31-year-old Bracy-Williams, who mysteriously disappeared from sprinting in 2023, was brought to its attention by a whistleblower.

That led to the sprinter testing positive for a banned substance. The case continued with Bracy-Williams' attempt to hinder the investigation and ended with him providing “substantial assistance” to authorities, who uncovered other cases.

USADA said the Athletics Integrity Unit, which oversees doping cases for World Athletics, and the U.S. Drug Enforcement Administration also participated in the

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