The 1990 ATP Tour World Championships, also known as the 1990 IBM ATP Tour World Championships for sponsorship reasons, was a men's tennis tournament played on indoor carpet courts in Frankfurt, Germany. It was the 21st edition of the tournament and was held between 13–18 November 1990. Andre Agassi won the singles title. Finals Singles Andre Agassi defeated Stefan Edberg, 5–7, 7–6(7–5), 7–5, 6–2 Doubles Guy Forget / Jakob Hlasek defeated Sergio Casal / Emilio Sánchez 6–4, 7–6(7–5), 5–7, 6–4 References Tennis tournaments in Germany ATP Finals Tennis tournaments in Australia ATP Tour World Championships Sports competitions in Frankfurt ATP Tour World Championships Tennis in Queensland Atp Tour World Championships Atp Tour World Championships, 1990