Defending champion Mitch Seavey said this could be the year any number of mushers win the race .
Champion 's keeping an eye on Sorlie , who is competing in only in champion 's 's fifth Alaska race .
Defending champion Mitch Seavey said this could be the year any number of mushers win the race , but he 's keeping an eye on Sorlie , who is competing in only in his fifth Alaska race .