Andrea Weiermann-Lietz and the West German female field hockey team won the silver medal at the 1984 Los Angeles Olympics round-robin tournament, finishing with six points. She also won the bronze medal at the 1984 Europeans. Weiermann-Lietz won 20 international caps between 1980-84.
Domestically, Weiermann-Lietz played with RTHC Bayer Leverkusen and helped them to win the German Championship in 1982 and 1983, and also the Indoor title in 1981 and 1982. By profession, she became a school teacher at Köln.