Buuxi weedha soo socota: Müller wuxuu u ciyaaray ASK Vorwärts Oberhof iyo BSR "Rennsteig" Oberhof. Intii uu ku jiray xirfadiisa, wuxuu ku guuleystay 14 billadood oo ka tirsan FIL World Luge Championships, oo ay ku jiraan afar dahab ah (Ragga keli ah: 2000, Kooxda isku dhafan: 1990, 1991, 1995), toddobo billadood oo qalin ah (Ragga keli ah: 1987,
1989, 1999; Kooxda isku dhafan: 1989, 1996, 1997, 2000), iyo seddex naxaas ah (Ragga keli ah: 1985, 1990, 1996).