| Men's singles | |
|---|---|
| 2017 Challenger Banque Nationale de Gatineau | |
| Champion |  Denis Shapovalov |
| Runner-up | Peter Polansky |
| Score | 6–1, 3–6, 6–3 |
Peter Polansky was the defending champion but lost in the final to Denis Shapovalov.
Shapovalov won the title after defeating Polansky 6–1, 3–6, 6–3 in the final.
Malek Jaziri (semifinals)
Thomas Fabbiano (quarterfinals)
Blaž Kavčič (second round, retired)
Go Soeda (second round) Peter Polansky (final)
Jason Jung (first round) Denis Shapovalov (champion)
Vincent Millot (quarterfinals)| Semifinals | Final | ||||||||||||
| 1 | Malek Jaziri | 6 | 1 | 2 | |||||||||
| 5 | Peter Polansky | 4 | 6 | 6 | |||||||||
| 5 | Peter Polansky | 1 | 6 | 3 | |||||||||
| 7 | Denis Shapovalov | 6 | 3 | 6 | |||||||||
 Alexander Sarkissian | 3 | 4 | |||||||||||
| 7 | Denis Shapovalov | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Jaziri | 6 | 6 | ||||||||||||||||||||||||
| Alt | D Nguyen | 1 | 0 | 1 | M Jaziri | 64 | 77 | 6 | |||||||||||||||||||
| PR | B Klahn | 3 | 65 | B Schnur | 77 | 62 | 1 | ||||||||||||||||||||
| B Schnur | 6 | 77 | 1 | M Jaziri | 6 | 1 | 7 | ||||||||||||||||||||
| WC |  L Broady | 6 | 2 | 7 | 8 | V Millot | 4 | 6 | 5 | ||||||||||||||||||
| B Rola | 2 | 6 | 5 | WC | L Broady | 2 | 6 | 2 | |||||||||||||||||||
 Z Zhang | 4 | 7 | 2 | 8 | V Millot | 6 | 1 | 6 | |||||||||||||||||||
| 8 | V Millot | 6 | 5 | 6 | 1 | M Jaziri | 6 | 1 | 2 | ||||||||||||||||||
| 4 | G Soeda | 6 | 6 | 5 | P Polansky | 4 | 6 | 6 | |||||||||||||||||||
| T Chen | 4 | 4 | 4 | G Soeda | 2 | 1 | |||||||||||||||||||||
| Q | M Giron | 6 | 6 | Q | M Giron | 6 | 6 | ||||||||||||||||||||
| WC | F Peliwo | 2 | 0 | Q | M Giron | 6 | 3 | 3 | |||||||||||||||||||
| M McDonald | 3 | 0r | 5 | P Polansky | 3 | 6 | 6 | ||||||||||||||||||||
| Q | JC Aragone | 6 | 1 | Q | JC Aragone | 6 | 3 | 1 | |||||||||||||||||||
| H Moriya | 2 | 2 | 5 | P Polansky | 3 | 6 | 6 | ||||||||||||||||||||
| 5 | P Polansky | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | J Jung | 3 | 65 | ||||||||||||||||||||||||
| Y Uchiyama | 6 | 77 | Y Uchiyama | 4 | 6 | 5 | |||||||||||||||||||||
| S Diez | 3 | 2 | A Sarkissian | 6 | 4 | 7 | |||||||||||||||||||||
| A Sarkissian | 6 | 6 | A Sarkissian | 6 | 4 | 6 | |||||||||||||||||||||
 Y Bhambri | 6 | 6 | Y Bhambri | 3 | 6 | 4 | |||||||||||||||||||||
| T Ito | 3 | 2 | Y Bhambri | 77 | 3 | ||||||||||||||||||||||
| Q |  M Torpegaard | 2 | 1 | 3 | B Kavčič | 61 | 1r | ||||||||||||||||||||
| 3 | B Kavčič | 6 | 6 | A Sarkissian | 3 | 4 | |||||||||||||||||||||
| 7 | D Shapovalov | 6 | 3 | 6 | 7 | D Shapovalov | 6 | 6 | |||||||||||||||||||
| WC | P Bester | 3 | 6 | 3 | 7 | D Shapovalov | 6 | 6 | |||||||||||||||||||
 E Leshem | 1 | 0r | Alt |  M Purcell | 1 | 2 | |||||||||||||||||||||
| Alt | M Purcell | 6 | 0 | 7 | D Shapovalov | 6 | 3 | 6 | |||||||||||||||||||
| WC | B Sigouin | 1 | 3 | 2 | T Fabbiano | 3 | 6 | 3 | |||||||||||||||||||
| Q | S Bangoura | 6 | 6 | Q | S Bangoura | 5 | 63 | ||||||||||||||||||||
| O Jasika | 6 | 1 | 1 | 2 | T Fabbiano | 7 | 77 | ||||||||||||||||||||
| 2 | T Fabbiano | 0 | 6 | 6 | |||||||||||||||||||||||
Peter Polansky was the defending champion, but withdrew because of an elbow injury.
Reilly Opelka was the reigning champion, but was ineligible to compete this year.
Noah Rubin was the defending champion but lost in the first round to Peter Polansky.
Kei Nishikori was the four-time defending champion, but chose to compete in Buenos Aires instead.
Dan Evans was the defending champion, but decided not to participate this year.
Juan Mónaco was the defending champion, but lost in the first round to Dustin Brown.
Bjorn Fratangelo was the defending champion but chose not to defend his title.
Frances Tiafoe was the defending champion but chose not to defend his title.
Novak Djokovic defeated Juan Martín del Potro in the final, 6–3, 7–6(7–4), 6–3 to win the men's singles tennis title at the 2018 US Open. It was his third US Open title and 14th major title overall.
Malek Jaziri was the defending champion but chose not to defend his title.
Lucas Pouille was the defending champion, but lost in the semifinals to Milos Raonic.
Denis Shapovalov was the defending champion but chose not to defend his title.
Juan Martín del Potro was the two-time defending champion but chose not to defend his title.
Roger Federer was the defending champion, but chose not to participate this year.
Dominic Thiem defeated Roger Federer in the final, 3–6, 6–3, 7–5 to win the men's singles tennis title at the 2019 Indian Wells Masters. It was his maiden ATP Tour Masters 1000 title, and he became the first Austrian to win a Masters title since Thomas Muster won the 1997 Miami Open.
Jérémy Chardy was the defending champion but chose not to defend his title.
Bernard Tomic was the defending champion, but retired in the first round of the qualifying tournament against Denis Istomin.
Peter Polansky was the defending champion but lost in the second round to Strong Kirchheimer.
Alexander Zverev was the defending champion from when the event was held in 2019, but chose not to defend his title.
Matteo Berrettini defeated Andy Murray in the final, 6–4, 5–7, 6–3 to win the singles tennis title at the 2022 Stuttgart Open.