ATP - Toronto

The ATP tour continues in Canada.

2023 National Bank Open presented by Rogers, an ATP Masters 1000 tournament, on Hard Outdoor, Toronto, Canada, 7-13 August 2023.

2022 champion (not defending):

Pablo Carreno Busta who defeated Hubert Hurkacz (8) 3-6 6-3 6-3

The following players withdrew after entering but before the main draw was published:

- Roberto Bautista Agut replaced by Gregoire Barrere

- Pablo Carreno Busta replaced by J.J. Wolf

- Marin Cilic replaced by Zhang Zhizhen 

- Novak Djokovic replaced by Christopher Eubanks 

- Karen Khachanov replaced by Aslan Karatsev

- Nick Kyrgios replaced by Emil Ruusuvuori 

- Denis Shapovalov replaced by Mackenzie McDonald 

- Jan-Lennard Struff replaced by Bernabe Zapata Miralles

Carlos Alcaraz, world number 1, is top seed.

The other 15 seeds are all in the top 19

The top eight seeds have first round byes.