Thomas Muster is an Austrian former professional tennis player. He was ranked as the world No. 1 in men's singles by the Association of Tennis Professionals (ATP). Muster won 44 ATP Tour-level singles titles, including the 1995 French Open and eight Masters titles. One of the world's leading clay court players in the 1990s, at his peak he was called "The King of Clay". He is the first Austrian to win a major singles title, followed by Dominic Thiem at the 2020 US Open. ATP world No. 1 from March 11, 1996 to April 14, 1996 — 5 weeks. Wiki link