# 2016 Stockton ATP Challenger – Singles

This was the first edition of the tournament.
Frances Tiafoe won the title after defeating Noah Rubin 6–4, 6–2 in the final.

## Seeds

* Bjorn Fratangelo (first round)
* Tim Smyczek (second round)
* Frances Tiafoe (champion)
* Santiago Giraldo (first round)
* Denis Kudla (quarterfinals)
* Alessandro Giannessi (quarterfinals)
* Dennis Novikov (first round)
* Quentin Halys (first 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

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Noah Rubin | 6 | 6 | | | | |
| SE | Michael Mmoh | 2 | 3 | | | | |
| SE | Michael Mmoh | 2 | 3 | | Noah Rubin | 4 | 2 |
| | | | | 3 | Frances Tiafoe | 6 | 6 |
| 3 | Frances Tiafoe | 7$^7$ | 6 | 3 | Frances Tiafoe | 6 | 6 |
| SE | Mackenzie McDonald | 6$^4$ | 3 | | | | |

### Top 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | B Fratangelo | 6 | 3 | 5 | | | | | | | | | | | | | | |
| | J De Loore | 3 | 6 | 7 | | J De Loore | 5 | 6 | 1 | | | | | | | | | |
| | G Clezar | 6 | 3 | 3 | | N Rubin | 7 | 3 | 6 | | | | | | | | | |
| | N Rubin | 2 | 6 | 6 | | | | | | | N Rubin | 4 | 6 | 6 | | | | |
| | T Paul | 2 | 2 | | | | | | | | F Dancevic | 6 | 2 | 3 | | | | |
| | F Dancevic | 6 | 6 | | | F Dancevic | 6 | 6 | | | | | | | | | | |
| Q | B Klein | 2 | 6 | 6 | Q | B Klein | 4 | 4 | | | | | | | | | | |
| 8 | Q Halys | 6 | 4 | 1 | | | | | | | | | | | | N Rubin | 6 | 6 |
| 4 | S Giraldo | 3 | 6 | 4 | | | | | | | | | | | SE | M Mmoh | 2 | 3 |
| | M Arévalo | 6 | 2 | 6 | | M Arévalo | 6 | 3 | 3 | | | | | | | | | |
| | S Bangoura | 0 | 3 | | | D King | 2 | 6 | 6 | | | | | | | | | |
| | D King | 6 | 6 | | | | | | | | D King | 4 | 4 | | | | | |
| | A González | 3 | 1 | | | | | | | SE | M Mmoh | 6 | 6 | | | | | |
| SE | M Mmoh | 6 | 6 | | SE | M Mmoh | 6 | 6 | | | | | | | | | | |
| Q | S Caruso | 6 | 6 | | Q | S Caruso | 3 | 2 | | | | | | | | | | |
| 7 | D Novikov | 2 | 3 | | | | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | A Giannessi | 6 | 6 | | | | | | | | | | | | | | | |
| WC | José Chamba Gómez | 1 | 4 | | 6 | A Giannessi | 4 | 7 | 7 | | | | | | | | | |
| | D Nguyen | 2 | 6 | 6 | | D Nguyen | 6 | 5 | 5 | | | | | | | | | |
| | Y Bhambri | 6 | 4 | 3 | | | | | | 6 | A Giannessi | 6$^6$ | 3 | | | | | |
| Q | Dennis Nevolo | 6 | 6 | | | | | | | 3 | F Tiafoe | 7$^7$ | 6 | | | | | |
| Q | F Nielsen | 4 | 2 | | Q | D Nevolo | 6$^6$ | 3 | | | | | | | | | | |
| | B Rola | 6 | 5 | 3 | 3 | F Tiafoe | 7$^8$ | 6 | | | | | | | | | | |
| 3 | F Tiafoe | 3 | 7 | 6 | | | | | | | | | | | 3 | F Tiafoe | 7$^7$ | 6 |
| 5 | D Kudla | 7$^9$ | 6 | | | | | | | | | | | | SE | M McDonald | 6$^4$ | 3 |
| WC | N Meister | 6$^7$ | 2 | | 5 | D Kudla | 5 | 6 | 7 | | | | | | | | | |
| | P Polansky | 6$^3$ | 6 | 5 | WC | B Baker | 7 | 4 | 5 | | | | | | | | | |
| WC | B Baker | 7$^7$ | 3 | 7 | | | | | | 5 | D Kudla | 6 | 6$^1$ | 4 | | | | |
| SE | M McDonald | 6 | 6 | | | | | | | SE | M McDonald | 3 | 7$^7$ | 6 | | | | |
| WC | S Verbeek | 2 | 2 | | SE | M McDonald | 6 | 6 | | | | | | | | | | |
| | G Žemlja | 4 | 6 | 1 | 2 | T Smyczek | 4 | 4 | | | | | | | | | | |
| 2 | T Smyczek | 6 | 3 | 6 | | | | | | | | | | | | | | |