1984 Mercedes Cup  The 1984 Mercedes Cup, was a men's tennis tournament played on outdoor clay courts and held at the Tennis Club Weissenhof in Stuttgart, West Germany that was part of the 1984 Grand Prix circuit. It was the seventh edition of the tournament and was held from 16 July until 22 July 1984. Seventh-seeded Henri Leconte won the singles title. Henri Leconte defeated Gene Mayer, 7–6(11–9), 6–0, 1–6, 6–1   Gene Mayer / Andreas Maurer defeated Fritz Buehning / Ferdi Taygan, 7–6, 6–4