Whakaotihia te rerenga e whai ake nei: I te wā i riro i tana kapa me te kaitiaki Brad Jacobs ngā mētara hiriwa i runga i
2013 World Men's Curling Championship, Matt Dumontelle i whakamatautauria he pai mo te raau taero methandienone, he steroid anabolic, i roto i te whakamatautau i muri i te kemu koura-tohu a te ao ka whakakorea ia mo nga tau e rua, ka mutu tenei whiu i te Mei 6, 2015. Tae noa ki taua wā, kāore ia i āhei ki te whai wāhi ki tētahi hākinakina e noho ana hei wāhanga o te Kaupapa Anti-Doping Canadian.