GENEVA—The Court of Arbitration for Sport has been criticized for picking judges to work at the Tokyo Olympics who were not expert enough to handle doping cases. Days before CAS opens its special Olympic courts at the Winter Games in Beijing, it was singled out in a wide-ranging report published by the World Anti-Doping Agency that broadly praised operations at last year’s Tokyo Olympics. Some CAS judges in Tokyo had an “insufficient level of anti-doping knowledge” relating to rules and previous cases, independent observers appointed by WADA said Friday. “Some questions asked by panel members in at least one of the hearings highlighted this,” the observer team said. The 44-page report did not identify which members of the CAS anti-doping division in Tokyo—a president, co-president, and six arbitrators—were thought to lack expert knowledge for the handful of cases they dealt with. Of the six arbitrators at the Tokyo Games, only …