Career He scored his first and final goal in a 2–2 home friendly draw against Spain. International goals.
Achievements He spent most of his career with Bayer Leverkusen, with whom he won the Union of European Football Associations Cup in 1988, and won 11 caps for West Germany, scoring once. Waas made his debut on 6 July 1983 in a 4–2 friendly home win against Luxembourg.