Marathon world-record holder Ruth Chepng'etich banned 3 years after admitting doping violation Lyles and Richardson has US Olympic team looking for gold at 2028 LA Games Aerial circus in Brazil spotlights a path to healing Lisa Tertsch, Matthew Hauser become world triathlon champions after winning season finals Boiler up! Purdue tops preseason AP Top 25 for first time, ahead of Houston, reigning champ Florida