2020 French Open – Men's singles

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. It was his record-extending 13th French Open title and 20th major title overall, equaling Roger Federer's all-time record of men's singles titles. For the fourth time in his career, Nadal won the title without dropping 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. Nadal also became the first player, male or female, to win 100 matches at the French Open and only the second man, after Federer at the Australian Open and Wimbledon, to win 100 matches at the same major. Djokovic was attempting to become the first man in the Open Era to achieve the double career Grand Slam (a feat he would accomplish the following year). Instead, he suffered his worst ever defeat in a grand slam final, managing to win only seven games. Djokovic lost the first set 6-0 (only the fourth time in his grand slam career) and 12 of the first 14 games.

Lorenzo Giustino defeated Corentin Moutet 0–6, 7–6(9–7), 7–6(7–3), 2–6, 18–16 in the first round. The match was the second-longest in French Open history, lasting 6 hours and 5 minutes, and the fourth-longest in major history. Taylor Fritz and Lorenzo Sonego played the longest tie-break in French Open history: Sonego won the third set tie-break 19–17 to win their third-round match 7–6(7–5), 6–3, 7–6(19–17).

Jannik Sinner became the first man to reach the quarterfinals of the French Open on debut since Nadal in 2005 and the youngest quarterfinalist since Djokovic in 2006. He also became the first man born in the 21st century to reach a major quarterfinal.

Rafael Nadal and Jannik Sinner's quarterfinal was the first men's match to start at night in French Open history. Their match, which was played under cold and windy conditions, started after 10:00 pm CEST and finished at 1:26 am, making it the first ever French Open match to finish after midnight.

Seeds
All seedings per ATP rankings. • 🇷🇸 Novak Djokovic (final)

• 🇪🇸 Rafael Nadal (champion)

• 🇦🇹 Dominic Thiem (quarterfinals)

• 🇷🇺 Daniil Medvedev (first round)

• Stefanos Tsitsipas (semifinals)

• 🇩🇪 Alexander Zverev (fourth round)

• 🇮🇹 Matteo Berrettini (third round)

• 🇫🇷 Gaël Monfils (first round)

• 🇨🇦 Denis Shapovalov (second round)

• 🇪🇸 Roberto Bautista Agut (third round)

• 🇧🇪 David Goffin (first round)

• 🇦🇷 Diego Schwartzman (semifinals)

• 🇷🇺 Andrey Rublev (quarterfinals)

• 🇮🇹 Fabio Fognini (first round)

• 🇷🇺 Karen Khachanov (fourth round)

•  Stan Wawrinka (third round)

• 🇪🇸 Pablo Carreño Busta (quarterfinals)

• 🇧🇬 Grigor Dimitrov (fourth round)

• 🇨🇦 Félix Auger-Aliassime (first round)

•  Cristian Garín (third round)

• 🇺🇸 John Isner (second round)

• 🇷🇸 Dušan Lajović (second round)

• 🇫🇷 Benoît Paire (second round)

•  Borna Ćorić (first round)

• 🇦🇺 Alex de Minaur (first round)

• 🇷🇸 Filip Krajinović (first round)

• 🇺🇸 Taylor Fritz (third round)

• 🇳🇴 Casper Ruud (third round)

• 🇵🇱 Hubert Hurkacz (first round)

• 🇩🇪 Jan-Lennard Struff (second round)

•  Nikoloz Basilashvili (first round)

• 🇬🇧 Dan Evans (first round)

Wild cards
• 🇫🇷 Elliot Benchetrit

• 🇫🇷 Hugo Gaston

• 🇫🇷 Quentin Halys

• 🇫🇷 Antoine Hoang

• 🇫🇷 Maxime Janvier

• 🇫🇷 Harold Mayot

• 🇬🇧 Andy Murray

• 🇫🇷 Arthur Rinderknech

Protected ranking
• Kevin Anderson (14)

• 🇵🇱 Kamil Majchrzak (105)

• 🇺🇸 Mackenzie McDonald (83)

Qualifiers
• 🇩🇪 Daniel Altmaier

• 🇫🇷 Benjamin Bonzi

• 🇬🇧 Liam Broady

• 🇮🇹 Marco Cecchinato

• 🇨🇦 Steven Diez

• 🇮🇹 Lorenzo Giustino

• 🇪🇨 Emilio Gómez

• 🇺🇸 Sebastian Korda

• Henri Laaksonen

• 🇨🇿 Tomáš Macháč

• 🇪🇸 Pedro Martínez

• 🇷🇸 Nikola Milojević

• 🇺🇸 Michael Mmoh

• 🇦🇹 Jurij Rodionov

• 🇺🇸 Jack Sock

• 🇦🇺 Aleksandar Vukic

Lucky losers
• 🇨🇴 Daniel Elahi Galán

• Jason Jung

• 🇦🇺 Marc Polmans

Withdrawals
• 🇬🇧 Kyle Edmund → replaced by 🇨🇴 Daniel Elahi Galán

• Roger Federer → replaced by 🇦🇷 Federico Coria

• 🇦🇺 Nick Kyrgios → replaced by 🇸🇰 Norbert Gombos

• 🇫🇷 Lucas Pouille → replaced by 🇵🇱 Kamil Majchrzak

• 🇨🇦 Milos Raonic → replaced by  Jason Jung

• 🇫🇷 Jo-Wilfried Tsonga → replaced by 🇪🇸 Jaume Munar

• 🇪🇸 Fernando Verdasco → replaced by 🇦🇺 Marc Polmans