AdvertisementAt The U.S. Olympic Trials, Mixed Opinions About Russian Doping Scandal03:45Download AudioResumeJuly 07, 2016Tom GoldmanfacebookEmailAdam Nelson reacts during the men's shot put final July 1 at the U.S. Olympic Trials for track and field in Eugene, Ore. Nelson, 40, finished seventh and failed in a bid to make his fourth Olympic team. (AP)