FILE- In this March 4, 2017, file photo, four-time and defending champion Dallas Seavey mushes during the ceremonial start of the Iditarod Trail Sled Dog Race in Anchorage, Alaska. Seavey denies he administered banned drugs to his dogs in this
FILE- In this March 4, 2017, file photo, four-time and defending champion Dallas Seavey mushes during the ceremonial start of the Iditarod Trail Sled Dog Race in Anchorage, Alaska. Seavey denies he administered banned drugs to his dogs in this year’s race, and has withdrawn from the 2018 race in protest. The Iditarod Trail Committee on Monday, Oct. 23, 2017, identified Seavey as the musher who had four dogs test positive for a banned opioid pain reliever after finishing the race last March in Nome. (AP Photo/Michael Dinneen, File)