First-seeded and two-time defending champion Björn Borg successfully defended his tennis title at the 1980 French Open, defeating Vitas Gerulaitis 6–4, 6–1, 6–2 in the final to win his fifth French title after 1974, 1975, 1978 and 1979. Borg went through the entire tournament, which featured 17 of the top 20 players, without dropping a set; this would not be achieved by a man again

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French Open. Paris, France Sofia Open (TBD) Sofia, Bulgaria. Oct 4-11: Rakuten Japan Open Tennis Championships. Tokyo, Japan. Novak Djokovic. Oct 4-11: 10-8 in the men's final of a grass

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