KINGSTON, Jamaica—American sprinter Sha’Carri Richardson, expected to be one of the biggest draws at the Tokyo Olympics, will miss the 100 meters at the Games after accepting a one-month ban for testing positive for cannabis during her U.S. trials victory in June. The United States Anti-Doping Agency (USADA) confirmed the suspension on Friday, though the 21-year-old still has a chance of running in the Olympic relay events. The positive test came at the U.S. Olympic trials when Richardson underlined her credentials as a serious gold medal contender by winning the 100m in 10.86 seconds. The women’s 100m event in Tokyo starts on July 30, two days after Richardson’s ban ends but the adverse finding means her Olympic qualifying results at the trials, which offer automatic places to the first three qualified athletes in each event, are annulled. “The rules are clear, but this is heartbreaking on many levels,” USADA CEO …