2017 Rogers Cup – Men's singles

Alexander Zverev defeated Roger Federer in the final, 6–3, 6–4 to win the men's singles tennis title at the 2017 Canadian Open. Zverev saved three match points en route to the title, in his second-round match against Richard Gasquet.

Novak Djokovic was the reigning champion, but did not participate due to an elbow injury.

As a result of Andy Murray's withdrawal due to a hip injury, Rafael Nadal had a chance to regain the ATP no. 1 singles ranking for the first time since 2014 by reaching the semifinals; however, he lost in the third round to Denis Shapovalov.

Seeds
The top eight seeds received a bye into the second round. • #🇪🇸 Rafael Nadal (third round)

• # Roger Federer (final)

• #🇦🇹 Dominic Thiem (second round)

• #🇩🇪 Alexander Zverev (champion)

• #🇯🇵 Kei Nishikori (second round)

• #🇨🇦 Milos Raonic (second round)

• #🇧🇬 Grigor Dimitrov (third round)

• #🇫🇷 Jo-Wilfried Tsonga (second round)

• #🇧🇪 David Goffin (second round)

• #🇨🇿 Tomáš Berdych (withdrew)

• #🇪🇸 Pablo Carreño Busta (second round)

• #🇪🇸 Roberto Bautista Agut (quarterfinals)

• #🇫🇷 Lucas Pouille (first round)

• #🇺🇸 John Isner (first round)

• #🇺🇸 Jack Sock (second round)

• #🇦🇺 Nick Kyrgios (third round)

Seeds
• # 🇫🇷 Pierre-Hugues Herbert (qualified)

• # 🇮🇱 Dudi Sela (qualified)

• # 🇨🇾 Marcos Baghdatis (withdrew)

• # 🇺🇸 Ernesto Escobedo (qualifying competition, lucky loser)

• # 🇸🇰 Norbert Gombos (qualified)

• # 🇷🇴 Marius Copil (first round)

• # 🇮🇹 Thomas Fabbiano (qualified)

• # 🇷🇺 Mikhail Youzhny (qualifying competition, lucky loser)

• # 🇫🇷 Nicolas Mahut (qualifying competition)

• # 🇺🇸 Reilly Opelka (qualified)

• # 🇦🇺 Matthew Ebden (qualifying competition)

• # 🇫🇷 Vincent Millot (qualified)

• # 🇺🇸 Tim Smyczek (qualified)

• # 🇮🇪 James McGee (qualifying competition)

Qualifiers
• # 🇫🇷 Pierre-Hugues Herbert

• # 🇮🇱 Dudi Sela

• # 🇫🇷 Vincent Millot

• # 🇺🇸 Reilly Opelka

• # 🇸🇰 Norbert Gombos

• # 🇺🇸 Tim Smyczek

• # 🇮🇹 Thomas Fabbiano

Lucky losers
• # 🇷🇺 Mikhail Youzhny

• # 🇺🇸 Ernesto Escobedo