Anke Westendorf was on the East German volleyball team that won the bronze medal at the 1975 European Championships. In 1977 and 1979, she added two more silver medals. In 1976, she played at the Montréal Olympics, but the GDR team lost all its matches, including the match for fifth place against Cuba. Four years later at Moskva she won a silver medal, losing twice against then Soviet Union both in the preliminary round and the final by 3-1 in sets. Westendorf earned 230 international caps.
Domestically, Westendorf played with SC Traktor Schwerin from 1969-82 and helped them win the East German Championships in 1976-77 and 1980-82. She was also on the squads winning the European Cup Winners’ Cup in 1975 and the European Champions Cup in 1978.