Ku qor sii wadida faqradan - At FIL European Luge Championships, Gruber wuxuu ku guuleystay sagaal billadood oo ay ku jiraan laba dahab ah (Ragga laba-labo: 2008, 2014), afar lacag ah (Ragga laba-labo: 2004
; Kooxda isku dhafan: 2004, 2006, 2013), iyo seddex naxaas ah (Ragga lamaanaha: 2006; Kooxda isku dhafan: 2012, 2014).