If doping dominated the prelude to the Rio Olympics after the exclusion of a number of Russian athletes, it turns out drug testing protocols undertaken during the Games had "serious failings," according to the World Anti-Doping Agency.So much so that on certain days, less than than 50% of planned tests were carried out, with the report claiming out-of-competition targets for testing in the Olympic Village were "rarely met.Read more on NewsOK.com