(Hillsboro, OR) -- A former Olympian and elite equestrian coach has pleaded guilty to child sexual abuse charges. Richard Fellers competed in the 2012 London Olympics. He became an equestrian coach and opened stables in Tualatin. He was training a 14-year-old girl who lived on her own while her family lived in California. When she was 16, Fellers coerced her into having sex. He abused the victim multiple times, including in other states during equestrian competitions. In 2020, Feller's wife caught them and the investigation began. Fellers pleaded guilty to state and federal charges and will serve four years in federal prison.