Three-time defending champion Rafael Nadal defeated Novak Djokovic in the final, 6–0, 6–2, 7–5 to win the men's singles tennis title at the 2020 French Open.

For the fourth time in his career, Nadal did not lose a set during the tournament (following 2008, 2010, and 2017); for the first time in French Open history, neither the men's nor women's singles champions lost a set during their tournaments.

[2] Djokovic was attempting to become the first man in the Open Era to achieve the double career Grand Slam.

Djokovic lost the first set 6–0 (only his fourth bagel in his major career) and 12 of the first 14 games.

[6] Jannik Sinner was the first man to reach the quarterfinals on his tournament debut since Nadal in 2005, and the youngest quarterfinalist since Djokovic in 2006.