 Nyorai kuenderera mberi kweiyi ndima - Grishin aive ne podium imwe chete nzvimbo yechitatu mumwaka we2006-2007 World Cup, achipedza 14th mushure memakwikwi matanhatu. Akapedza ari wechi15 pa2007 Freestyle World Ski Championshipsmakwikwi. 