 Kọ itẹsiwaju fun paragirafi yii - Müller bẹrẹ fun ASK Vorwärts Oberhof ati BSR Rennsteig Oberhof. Lakoko iṣẹ rẹ, o gba awọn ami-ẹyẹ 14 ni FIL World Luge Championships, pẹlu wura mẹrin Awọn ọkunrin nikan: 2000, Ẹgbẹ idapọ: 1990 : , 1991, 1995, meje fadaka Awọn ọkunrin nikan: 1987, 1989, 1999; Ajọpọ ẹgbẹ: 1989, 1996, 1997, 2000, ati idẹ mẹta Awọn ọkunrin nikan: 1985, 1990, 1996. 