# 2019 Challenger Banque Nationale de Granby – Men's singles

Peter Polansky was the defending champion but lost in the semifinals to Yasutaka Uchiyama.
Ernesto Escobedo won the title after defeating Uchiyama 7–6$^{(7–5)}$, 6–4 in the final.

## Seeds

All seeds receive a bye into the second round.
* Norbert Gombos (third round)
* Peter Polansky (semifinals)
* Yasutaka Uchiyama (final)
* Vasek Pospisil (third round)
* Maxime Janvier (second round)
* Enzo Couacaud (quarterfinals)
* Andrew Harris (third round)
* Jason Kubler (withdrew)
* Steven Diez (quarterfinals)
* Li Zhe (quarterfinals)
* Yosuke Watanuki (second round)
* Akira Santillan (second round)
* Hiroki Moriya (quarterfinals)
* Kaichi Uchida (second round)
* Maverick Banes (second round)
* Danilo Petrović (third round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 13 | Hiroki Moriya | 6$^2$ | 4 | | | | | | | | | | |
| | Borna Gojo | 7$^7$ | 6 | | | | | | | | | | |
| | Borna Gojo | 7$^7$ | 6 | | | Borna Gojo | 7$^7$ | 6$^3$ | 2 | | | | |
| | | | | | | Ernesto Escobedo | 6$^3$ | 7$^7$ | 6 | | | | |
| | Ernesto Escobedo | 7 | 7 | | | Ernesto Escobedo | 6$^3$ | 7$^7$ | 6 | | | | |
| 6 | Enzo Couacaud | 5 | 5 | | | | | | | | | | |
| 6 | Enzo Couacaud | 5 | 5 | | | | | | | | Ernesto Escobedo | 7$^7$ | 6 |
| | | | | | | | | | | 3 | Yasutaka Uchiyama | 6$^5$ | 4 |
| 10 | Li Zhe | 7$^7$ | 4 | 1 | | | | | | | | | | 3 | Yasutaka Uchiyama | 6$^5$ | 4 |
| 3 | Yasutaka Uchiyama | 6$^3$ | 6 | 6 | | | | | | | | | |
| 3 | Yasutaka Uchiyama | 6$^3$ | 6 | 6 | 3 | Yasutaka Uchiyama | 7$^9$ | 6 | | | | | |
| | | | | | 2 | Peter Polansky | 6$^7$ | 4 | | | | | |
| 9 | Steven Diez | 3 | 6$^4$ | | 2 | Peter Polansky | 6$^7$ | 4 | | | | | |
| 2 | Peter Polansky | 6 | 7$^7$ | | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | N Gombos | 6 | 7 | | | | | | | | | |
| ITF | E Hoyt | 4 | 6 | 6$^5$ | ITF | S Mansouri | 4 | 5 | | | | | | | | | |
| ITF | S Mansouri | 6 | 3 | 7$^7$ | | | | | | 1 | N Gombos | 3 | 6$^5$ | | | | |
| WC | Taha Baadi | 7$^7$ | 4 | 2 | | | | | | 13 | H Moriya | 6 | 7$^7$ | | | | |
| | B Sigouin | 6$^0$ | 6 | 6 | | B Sigouin | 3 | 7$^7$ | 3 | | | | | | | | |
| | | | | | 13 | H Moriya | 6 | 6$^5$ | 6 | | | | | | | | |
| | | | | | | | | | | | | | | 13 | H Moriya | 6$^2$ | 4 |
| | | | | | | | | | | | | | | | B Gojo | 7$^7$ | 6 |
| | | | | | 12 | A Santillan | 0 | 7$^7$ | 4 | | | | | | | | |
| | M Neuchrist | 6 | 7$^7$ | | | M Neuchrist | 6 | 6$^5$ | 6 | | | | | | | | |
| | D Novikov | 4 | 6$^4$ | | | | | | | | M Neuchrist | 3 | 0$^r$ | | | | |
| | B Gojo | 6 | 6 | | | | | | | | B Gojo | 6 | 3 | | | | |
| WC | J Boulais | 2 | 2 | | | B Gojo | 6 | 6 | | | | | | | | | |
| | | | | | Alt | A Göransson | 4 | 3 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4/WC | V Pospisil | 6 | 6 | | | | | | | | | | |
| ITF | Joshua Peck | 6 | 6 | | ITF | J Peck | 3 | 3 | | | | | | | | | | |
| | Tobias Simon | 4 | 4 | | | | | | | 4/WC | V Pospisil | 6 | 2 | 3 | | | | |
| | E Escobedo | 6 | 3 | 6 | | | | | | | E Escobedo | 4 | 6 | 6 | | | | |
| Alt | S Verbeek | 3 | 6 | 2 | | E Escobedo | 7 | 6 | | | | | | | | | | |
| | | | | | 14 | K Uchida | 5 | 3 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | E Escobedo | 7 | 7 |
| | | | | | | | | | | | | | | | 6 | E Couacaud | 5 | 5 |
| | | | | | 11 | Yo Watanuki | 4 | 5 | | | | | | | | | | |
| ITF | Alexander Lebedev | 3 | 6 | 0 | | G Sakharov | 6 | 7 | | | | | | | | | | |
| | G Sakharov | 6 | 1 | 6 | | | | | | | G Sakharov | 1 | 4 | | | | | |
| | E Zhu | 6 | 5 | 6 | | | | | | 6 | E Couacaud | 6 | 6 | | | | | |
| | H Nys | 4 | 7 | 3 | | E Zhu | 4 | 6 | 3 | | | | | | | | | |
| | | | | | 6 | E Couacaud | 6 | 3 | 6 | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | M Janvier | 5 | 3 | | | | | | | | | | |
| | C İlkel | 6 | 6 | | | C İlkel | 7 | 6 | | | | | | | | | | |
| | Jacob Grills | 1 | 0 | | | | | | | C İlkel | 6 | 6$^3$ | 5 | | | | | |
| ITF | Issei Okamura | 4 | 4 | | | | | | 10 | Z Li | 4 | 7$^7$ | 7 | | | | | |
| | T Garanganga | 6 | 6 | | | T Garanganga | 6$^3$ | 6$^6$ | | | | | | | | | | |
| | | | | | 10 | Z Li | 7$^7$ | 7$^8$ | | | | | | | | | | |
| | | | | | | | | | | | | | | 10 | Z Li | 7$^7$ | 4 | 1 |
| | | | | | | | | | | | | | | 3 | Y Uchiyama | 6$^3$ | 6 | 6 |
| | | | | | 16 | D Petrović | 7$^7$ | 6 | | | | | | | | | | |
| | A Sarkissian | 7 | 6 | | | A Sarkissian | 6$^5$ | 4 | | | | | | | | | | |
| WC | Nicaise Muamba | 5 | 2 | | | | | | 16 | D Petrović | 4 | 4 | | | | | | |
| | Pavel Krainik | 6 | 6$^6$ | 0 | | | | | 3 | Y Uchiyama | 6 | 6 | | | | | | |
| | M Sánchez | 3 | 7$^8$ | 6 | | M Sánchez | 4 | 1$^r$ | | | | | | | | | | |
| | | | | | 3 | Y Uchiyama | 6 | 4 | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 7 | A Harris | 6 | 6 | | | | | | | | | |
| ITF | Y Mertens | 6 | 6 | ITF | Y Mertens | 1 | 1 | | | | | | | | | |
| Q | Kooros Ghasemi | 2 | 0 | | | | | | 7 | A Harris | 4 | 2 | | | | |
| WC | B Holt | 6 | 6 | | | | | | 9 | S Diez | 6 | 6 | | | | |
| | L Draxl | 4 | 4 | WC | B Holt | 2 | 4 | | | | | | | | | |
| | | | | 9 | S Diez | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | 9 | S Diez | 3 | 6$^4$ |
| | | | | | | | | | | | | | 2 | P Polansky | 6 | 7$^7$ |
| | | | | 15 | M Banes | 3 | 2 | | | | | | | | | |
| | A Galarneau | 6 | 7$^7$ | | A Galarneau | 6 | 6 | | | | | | | | | |
| Q | H Reese | 2 | 6$^2$ | | | | | | | A Galarneau | 5 | 2 | | | | |
| | B Klein | 6$^8$ | 5 | | | | | | 2 | P Polansky | 7 | 6 | | | | |
| ITF | Jordi Arconada | 7$^{10}$ | 7 | ITF | J Arconada | 1 | 6 | 2 | | | | | | | | |
| | | | | 2 | P Polansky | 6 | 4 | 6 | | | | | | | | |