Nyorai kupfuurira kweiyi ndima - Müller akatanga nokuda kweASK Vorwärts Oberhof uye BSR "Rennsteig" Oberhof. Munguva yebasa rake, akahwina menduru gumi nemana paFIL World Luge Championships, kusanganisira ndarama ina (Varume vega: 2000, Chikwata chakasanganiswa: 1990, 1991, 1995), sirivheri nomwe (Varume vega: 1987, 1989, 1999; Chikwata chakasanganiswa: 1989, 1996
, 1997, 2000), uye nendarira nhatu (Men's singles: 1985, 1990, 1996).