# 2015 Columbus Challenger – Singles

This was the first edition of the tournament.
Dennis Novikov won the title after defeating Ryan Harrison 6–3, 3–6, 6–3 in the final.

## Seeds

* Tim Smyczek (semifinals)
* John-Patrick Smith (second round)
* Bjorn Fratangelo (quarterfinals)
* Ryan Harrison (final)
* Austin Krajicek (first round)
* Blaž Rola (first round)
* Brydan Klein (second round)
* Dennis Novikov (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 | Semifinals | Final | Final | Final | Final | Final |
| 1 | Tim Smyczek | 6$^5$ | 7$^7$ | 1 | | | | | |
| 4 | Ryan Harrison | 7$^7$ | 6$^5$ | 6 | | | | | |
| 4 | Ryan Harrison | 7$^7$ | 6$^5$ | 6 | 4 | Ryan Harrison | 4 | 6 | 3 |
| | | | | | 8 | Dennis Novikov | 6 | 3 | 6 |
| | Alex Kuznetsov | 3 | 6 | 3 | 8 | Dennis Novikov | 6 | 3 | 6 |
| 8 | Dennis Novikov | 6 | 3 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | T Smyczek | 6 | 6$^5$ | 6 | | | | | | | | | | | | | |
| | E Quigley | 4 | 7$^7$ | 3 | 1 | T Smyczek | 6 | 6 | | | | | | | | | |
| | M Krueger | 1 | 2 | | | J Milton | 0 | 1 | | | | | | | | | |
| | J Milton | 6 | 6 | | | | | | 1 | T Smyczek | 6 | 6 | | | | | |
| Q | D O'Brien | 3 | 1 | | | | | | | S Bangoura | 3 | 3 | | | | | |
| | S Bangoura | 6 | 6 | | | S Bangoura | 7$^7$ | 6 | | | | | | | | | |
| | J Statham | 3 | 7$^8$ | 6 | | J Statham | 6$^3$ | 4 | | | | | | | | | |
| 6 | B Rola | 6 | 6$^6$ | 2 | | | | | | | | | 1 | T Smyczek | 6$^5$ | 7$^7$ | 1 |
| 4 | R Harrison | 6 | 6 | | | | | | | | | | 4 | R Harrison | 7$^7$ | 6$^5$ | 6 |
| | A Bossel | 4 | 2 | | 4 | R Harrison | 6 | 6 | | | | | | | | | |
| | Q Halys | 6 | 2 | 6 | | Q Halys | 4 | 3 | | | | | | | | | |
| | P Bester | 1 | 6 | 0 | | | | | 4 | R Harrison | 6 | 6 | | | | | |
| | H Laaksonen | 6 | 6 | | | | | | | H Laaksonen | 3 | 3 | | | | | |
| | M Reid | 2 | 4 | | | H Laaksonen | 7$^{10}$ | 6 | | | | | | | | | |
| | T Garanganga | 6 | 3 | 6 | | T Garanganga | 6$^8$ | 4 | | | | | | | | | |
| 5 | A Krajicek | 2 | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | B Klein | 6 | 6$^3$ | 6 | | | | | | | | | | | | | | |
| Q | Hugo Di Feo | 1 | 7$^7$ | 3 | 7 | B Klein | 2 | 2 | | | | | | | | | | |
| | Connor Smith | 3 | 5 | | | A Kuznetsov | 6 | 6 | | | | | | | | | | |
| | A Kuznetsov | 6 | 7 | | | | | | | | A Kuznetsov | 6 | 7$^7$ | | | | | |
| Q | Damon Gooch | 6 | 3 | 1 | | | | | | 3 | B Fratangelo | 2 | 6$^5$ | | | | | |
| | A Bega | 4 | 6 | 6 | | A Bega | 6 | 2 | 2 | | | | | | | | | |
| PR | P Polansky | 7 | 4 | 6$^1$ | 3 | B Fratangelo | 4 | 6 | 6 | | | | | | | | | |
| 3 | B Fratangelo | 5 | 6 | 7$^7$ | | | | | | | | | | | A Kuznetsov | 3 | 6 | 3 |
| 8 | D Novikov | 7$^7$ | 7$^7$ | | | | | | | | | | | 8 | D Novikov | 6 | 3 | 6 |
| | S Kozlov | 6$^2$ | 6$^3$ | | 8 | D Novikov | 7$^7$ | 6$^4$ | 6 | | | | | | | | | |
| Q | P Kobelt | 6 | 1 | 3 | | M Arévalo | 6$^2$ | 7$^7$ | 2 | | | | | | | | | |
| | M Arévalo | 2 | 6 | 6 | | | | | | 8 | D Novikov | 6 | 6 | | | | | |
| PR | Dennis Nevolo | 5 | 3 | | | | | | | | C Buchanan | 4 | 4 | | | | | |
| | C Buchanan | 7 | 6 | | | C Buchanan | 6 | 7$^7$ | | | | | | | | | | |
| | D Cox | 7$^{11}$ | 3 | 2 | 2 | J-P Smith | 4 | 6$^2$ | | | | | | | | | | |
| 2 | J-P Smith | 6$^9$ | 6 | 6 | | | | | | | | | | | | | | |