At the 2017 World Championships, Gilman opened up with big wins over 2016 European Continental runner–up and two–time Cadet World Champion from Ukraine Andriy Yatsenko and 2017 Asian Continental medalist from Iran Reza Atri, before defeating 2017 Dave Schultz Memorial runner–up Nodirjon Safarov and stunning 2014 Asian Games Gold medalist from North–Korea Jong Hak-jin to astonishingly making the finals of the tournament. In the finale, Gilman's 15 match win–streak was broken by 2017 Asian Continental champion from Japan Yuki Takahashi, claiming the 2017 World Championship Silver medal. To cap off the year, Gilman helped Titan Mercury Wrestling Club reach second–place at the Clubs World Championship.