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For the athletics competitions at the 2016 Summer Olympics, the following qualification systems were in place. Qualification ended on 11 July 2016.
Because of the suspension of the Russian Athletics Federation by the IAAF, due to widespread doping violations, Russia currently will not qualify as a team for these Olympics or other international competitions, and unless this suspension is lifted in time, Russia will be unable to send an athletics delegation to these Games. While Russia will continue to seek further appeals, the IAAF confirmed its decision on 18 June 2016 after a report by a five-member task force which reported that Russia had failed to fully address its "deep-seeded [sic] culture" of doping. The IAAF did provide for the possibility of accepting individual Russian athletes who have been sufficiently tested outside of the Russian system. One athlete suggested was Yuliya Stepanova for her efforts to expose the scandal.
The systematic doping that has been ongoing in Russia, it’s difficult to pick the clean athletes. As you know, one or two or 100 negative tests does not mean an athlete is clean. History has not shown that that is the case.
The IAAF then stated on 24 June, that athletes from Russia seeking "exceptional eligibility for International Competition under Competition Rule 22.1A" will be considered and have the permission to compete, "not for Russia but as a neutral athlete", following guidelines. These athletes have to clearly and convincingly show that they are not co involved in the Russian system (outside the country and subject to other systems). On 1 July 2016, Yuliya Stepanova became the first neutral athlete to be qualified under these rules. Darya Klishina, who lives in the United States, has also been given permission. They will compete as Independent Olympic Athletes. The Court of Arbitration for Sport confirms that verdict and rejects the appeal of 68 Russian athletes, on 21 July 2016.
Different from the previous Olympics, a National Olympic Committee (NOC) may enter up to 3 qualified athletes in each individual event if all athletes meet the entry standard during the qualifying period. An NOC may also enter a maximum of 1 qualified relay team per event. NOCs may enter athletes regardless of time (1 athlete per sex) if they have no athletes meeting the entry standard. This makes it possible for every nation to have a minimum of two representatives in the sport.