Accomplished distance runner Shelby Houlihan was handed a four-year ban exactly one week before the start of U.S. Olympic Track and Field Trials.
Houlihan was considered an Olympic medal contender entering this year. The 2016 Olympian holds American records in both the 1500m and 5000m. In 2018, she became the second woman ever to win both distances at the U.S. outdoor championships.
Houlihan placed fourth in the 1500m at the 2019 World Championships.
The 28-year-old had not competed yet this year, which was explained on Monday evening.
Houlihan tested positive for nandrolone in an out-of-competition urine test administered by the World Anti-Doping Agency on Dec.