# 2017 Stockton ATP Challenger – Singles

Frances Tiafoe was the defending champion but chose not to defend his title.
Cameron Norrie won the title after defeating Darian King 6–1, 6–3 in the final.

## Seeds

* Ruben Bemelmans (first round)
* Tennys Sandgren (quarterfinals)
* Michael Mmoh (semifinals)
* Stefan Kozlov (quarterfinals)
* Ramkumar Ramanathan (first round)
* Darian King (final)
* Félix Auger-Aliassime (first round)
* Cameron Norrie (champion)

## 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

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Tim Smyczek | 1 | 4 | | | | |
| 6 | Darian King | 6 | 6 | | | | |
| 6 | Darian King | 6 | 6 | 6 | Darian King | 1 | 3 |
| | | | | 8 | Cameron Norrie | 6 | 6 |
| 3 | Michael Mmoh | 5 | 2 | 8 | Cameron Norrie | 6 | 6 |
| 8 | Cameron Norrie | 7 | 6 | | | | |

### Top half

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | R Bemelmans | 5 | 3 | | | | | | | | | | | | | |
| | E Ymer | 7 | 6 | | E Ymer | 3 | 7$^{10}$ | 6 | | | | | | | | |
| PR | F Dancevic | 6 | 6 | PR | F Dancevic | 6 | 6$^8$ | 4 | | | | | | | | |
| Q | S Bangoura | 4 | 0 | | | | | | | E Ymer | 4 | 4 | | | | |
| Q | F Nielsen | 2 | 5 | | | | | | | T Smyczek | 6 | 6 | | | | |
| | T Smyczek | 6 | 7 | | T Smyczek | 2 | 6 | 6 | | | | | | | | |
| | C Harrison | 6 | 6 | | C Harrison | 6 | 3 | 4 | | | | | | | | |
| 5 | R Ramanathan | 1 | 2 | | | | | | | | | | | T Smyczek | 1 | 4 |
| 4/Alt | S Kozlov | 6 | 6 | | | | | | | | | | 6 | D King | 6 | 6 |
| | B Schnur | 3 | 2 | 4/Alt | S Kozlov | 6 | 6 | | | | | | | | | |
| WC | D Kudla | 6 | 6 | WC | D Kudla | 4 | 4 | | | | | | | | | |
| Q | J Choinski | 0 | 3 | | | | | | 4/Alt | S Kozlov | 4 | 4 | | | | |
| WC | Akram El Sallaly | 2 | 3 | | | | | | 6 | D King | 6 | 6 | | | | |
| | N Rubin | 6 | 6 | | N Rubin | 6 | 1 | 2 | | | | | | | | |
| PR | A Ward | 5 | 6$^2$ | 6 | D King | 2 | 6 | 6 | | | | | | | | |
| 6 | D King | 7 | 7$^7$ | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | F Auger-Aliassime | 2 | 2 | | | | | | | | | | | | | | |
| Q | D Tursunov | 6 | 6 | | Q | D Tursunov | 7$^7$ | 6 | | | | | | | | | |
| | J-P Smith | 6 | 6 | | | J-P Smith | 6$^2$ | 3 | | | | | | | | | |
| | F Peliwo | 2 | 3 | | | | | | | Q | D Tursunov | 3 | 0$^r$ | | | | |
| | M McDonald | 6 | 4 | 6 | | | | | | 3 | M Mmoh | 6 | 0 | | | | |
| WC | A Göransson | 2 | 6 | 2 | | M McDonald | 6 | 2 | 6$^4$ | | | | | | | | |
| | T Kamke | 2 | 1 | | 3 | M Mmoh | 1 | 6 | 7$^7$ | | | | | | | | |
| 3 | M Mmoh | 6 | 6 | | | | | | | | | | | 3 | M Mmoh | 5 | 2 |
| 8 | C Norrie | 6 | 6 | | | | | | | | | | | 8 | C Norrie | 7 | 6 |
| WC | D Baughman | 3 | 1 | | 8 | C Norrie | 4 | 7$^7$ | 6 | | | | | | | | |
| | J Šátral | 2 | 2 | | | B Klein | 6 | 6$^1$ | 4 | | | | | | | | |
| | B Klein | 6 | 6 | | | | | | | 8 | C Norrie | 6 | 7$^7$ | | | | |
| | M Krueger | 6$^7$ | 1 | | | | | | | 2 | T Sandgren | 3 | 6$^5$ | | | | |
| | L Broady | 7$^9$ | 6 | | | L Broady | 6$^7$ | 4 | | | | | | | | | |
| | C O'Connell | 5 | 5 | | 2 | T Sandgren | 7$^9$ | 6 | | | | | | | | | |
| 2 | T Sandgren | 7 | 7 | | | | | | | | | | | | | | |