Born in Innsbruck, Prock competed in six Winter Olympics winning three medals in the men's singles event with two silvers (1992, 1994) and one bronze (2002).

[1] He competed in several sports in his youth, ski racing, playing football and sprinting, achieving personal bests of 22.8s for the 200m and 50.9s for the 400m whilst in high school.

Prock won ten medals at the FIL European Luge Championships with five in men's singles (gold: 1994, 1998, 2002; silver: 1988, 1990) and five medals in the mixed team event (silver: 1992, 1996; bronze: 1994, 1998, 2002).

He also won the overall Luge World Cup ten times in men's singles (1987–88, 1990–91, 1991–92, 1992–93, 1993–94, 1994–95, 1995–96, 1996–97, 1998–99, 2001–02).

[citation needed] After retiring from competition, Prock was appointed as sporting director of the Austrian Luge Federation in 2002.