FILE - United States' Shelby Houlihan, right, reacts after finishing a women's 5000m heat during the World Athletics Championships in London, in this Thursday, Aug. 10, 2017, file photo. Banned runner Shelby Houlihan is in the lineup and will be allowed to run at U.S. Olympic track trials while any appeals she files are pending. The American record holder at 1,500 and 5,000 meters, Houlihan is on the start list for Friday’s, June 18, 2021, 5,000 preliminaries. (AP Photo/Tim Ireland, File)

FILE - In this Thursday, Aug. 18, 2016 file photo, Gold medal winner Brianna Rollins from the United States shows off her medal during the medal ceremony for the women's 100-meter hurdles final during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil. Brianna Rollins-McNeal has been banned for five years in a doping case it was reported on Friday, June 4, 2021. The decision rules her out of this year's Tokyo Games and the 2024 Paris Games. The Athletics Integrity Unit says the American’s second career ban was for “tampering within the results management process” of doping control samples. The 29-year-old hurdler's ban runs to August 2024. AP Photo/Dmitri Lovetsky, File)