2019 Rogers Cup – Men's singles

Defending champion Rafael Nadal defeated Daniil Medvedev in the final, 6–3, 6–0 to win the men's singles tennis title at the 2019 Canadian Open. It was the first time Nadal successfully defended a hard court title.

Seeds
The top eight seeds receive a bye into the second round. • 🇪🇸 Rafael Nadal (champion)

• 🇦🇹 Dominic Thiem (quarterfinals)

• 🇩🇪 Alexander Zverev (quarterfinals)

• Stefanos Tsitsipas (second round)

• 🇯🇵 Kei Nishikori (second round)

• 🇷🇺 Karen Khachanov (semifinals)

• 🇮🇹 Fabio Fognini (quarterfinals)

• 🇷🇺 Daniil Medvedev (final)

• Kevin Anderson (withdrew)

• 🇪🇸 Roberto Bautista Agut (quarterfinals)

• Borna Ćorić (second round)

• 🇺🇸 John Isner (second round)

• Nikoloz Basilashvili (third round)

• Marin Čilić (third round)

• 🇧🇪 David Goffin (first round)

• 🇫🇷 Gaël Monfils (semifinals, withdrew)

• 🇨🇦 Milos Raonic (second round, retired due to back injury)

Seeds
• # 🇵🇱 Hubert Hurkacz (moved to main draw)

• # 🇬🇧 Dan Evans (qualified)

• # 🇪🇸 Feliciano López (qualified)

• # 🇦🇺 John Millman (qualifying competition; Lucky loser)

• # 🇰🇿 Alexander Bublik (first round)

• # 🇯🇵 Yoshihito Nishioka (qualifying competition)

• # 🇱🇹 Ričardas Berankis (qualifying competition)

• # Ivo Karlović (qualifying competition, withdrew)

• # 🇷🇴 Marius Copil (first round)

• # Lloyd Harris (first round)

• # Robin Haase (first round)

• # 🇦🇺 Alexei Popyrin (first round)

• # 🇺🇸 Bradley Klahn (qualified)

• # 🇦🇺 Bernard Tomic (qualified)

Qualifiers
• # 🇦🇺 Bernard Tomic

• # 🇬🇧 Dan Evans

• # 🇪🇸 Feliciano López

• # 🇰🇷 Kwon Soon-woo

• # 🇺🇸 Bradley Klahn

• # 🇧🇾 Ilya Ivashka

• # 🇺🇸 Tommy Paul

Lucky loser

 * 1) 🇦🇺 John Millman