# 2019 Columbus Challenger – Singles

Michael Mmoh was the defending champion but chose not to defend his title.
J. J. Wolf won the title after defeating Mikael Torpegaard 6–7$^{(4–7)}$, 6–3, 6–4 in the final.

## Seeds

All seeds receive a bye into the second round.
* Thiemo de Bakker (second round)
* Filip Peliwo (third round)
* Norbert Gombos (third round)
* Uladzimir Ignatik (quarterfinals)
* Santiago Giraldo (third round)
* Dennis Novikov (second round)
* Benjamin Bonzi (second round)
* Kevin King (second round)
* Gastão Elias (third round)
* Nino Serdarušić (second round)
* Mathias Bourgue (second round)
* Bernabé Zapata Miralles (semifinals)
* José Hernández-Fernández (second round)
* Johan Tatlot (second round)
* Gianluca Mager (second round)
* Mario Vilella Martínez (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 | Final | Final | Final | Final | Final |
| | Lucas Miedler | 6$^4$ | 2 | | | | | | | | | | |
| 12 | Bernabé Zapata Miralles | 7$^7$ | 6 | | | | | | | | | | |
| 12 | Bernabé Zapata Miralles | 7$^7$ | 6 | | 12 | Bernabé Zapata Miralles | 3 | 5 | | | | | |
| | | | | | WC | Mikael Torpegaard | 6 | 7 | | | | | |
| WC | Mikael Torpegaard | 6$^4$ | 7$^7$ | 6 | WC | Mikael Torpegaard | 6 | 7 | | | | | |
| | Vincent Millot | 7$^7$ | 6$^4$ | 0 | | | | | | | | | |
| | Vincent Millot | 7$^7$ | 6$^4$ | 0 | | | | | WC | Mikael Torpegaard | 7$^7$ | 3 | 4 |
| | | | | | | | | | WC | J. J. Wolf | 6$^4$ | 6 | 6 |
| | Scott Griekspoor | 7$^9$ | 3 | 6 | | | | | | | | | | WC | J. J. Wolf | 6$^4$ | 6 | 6 |
| 4 | Uladzimir Ignatik | 6$^7$ | 6 | 3 | | | | | | | | | |
| 4 | Uladzimir Ignatik | 6$^7$ | 6 | 3 | | Scott Griekspoor | 1 | 3 | | | | | |
| | | | | | WC | J. J. Wolf | 6 | 6 | | | | | |
| | Jan Choinski | 2 | 1 | | WC | J. J. Wolf | 6 | 6 | | | | | |
| WC | J. J. Wolf | 6 | 6 | | | | | | | | | | |

### 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 | T de Bakker | 3 | 3 | | | | | | | | | |
| ITF | Tom Jomby | 4 | 6 | 3 | | L Miedler | 6 | 6 | | | | | | | | | |
| | L Miedler | 6 | 3 | 6 | | | | | | | L Miedler | 6 | 6 | | | | |
| ITF | F Reboul | 4 | 6 | 3 | | | | | | 16 | M Vilella Martínez | 3 | 3 | | | | |
| Q | J Menezes | 6 | 4 | 6 | Q | J Menezes | 2 | 6$^5$ | | | | | | | | | |
| | | | | | 16 | M Vilella Martínez | 6 | 7$^7$ | | | | | | | | | |
| | | | | | | | | | | | | | | | L Miedler | 6$^4$ | 2 |
| | | | | | | | | | | | | | | 12 | B Zapata Miralles | 7$^7$ | 6 |
| | | | | | 12 | B Zapata Miralles | 1 | 7$^7$ | 7 | | | | | | | | |
| ITF | J Souza | 4 | 1 | | | G Oliveira | 6 | 6$^5$ | 5 | | | | | | | | |
| | G Oliveira | 6 | 6 | | | | | | | 12 | B Zapata Miralles | 6 | 7$^7$ | | | | |
| | C Taberner | 4 | 6 | 3 | | | | | | | M Giron | 4 | 6$^3$ | | | | |
| | M Giron | 6 | 3 | 6 | | M Giron | 6 | 6 | | | | | | | | | |
| | | | | | 8 | K King | 2 | 4 | | | | | | | | | |

#### Section 2

| 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 | Quarterfinals |
| | | | | 3 | N Gombos | 6 | 5 | 7$^7$ | | | | | | | | | | |
| | R Ortega Olmedo | 6 | 6 | | R Ortega Olmedo | 4 | 7 | 6$^3$ | | | | | | | | | | |
| WC | J McNally | 2 | 2 | | | | | | 3 | N Gombos | 6$^0$ | 3 | | | | | | |
| | A Pavić | 3 | 5 | | | | | | WC | M Torpegaard | 7$^7$ | 6 | | | | | | |
| WC | M Torpegaard | 6 | 7 | WC | M Torpegaard | 6 | 6 | | | | | | | | | | | |
| | | | | 13 | J Hernández-Fernández | 3 | 0 | | | | | | | | | | | |
| | | | | | | | | | | | | | | WC | M Torpegaard | 6$^4$ | 7$^7$ | 6 |
| | | | | | | | | | | | | | | | V Millot | 7$^7$ | 6$^4$ | 0 |
| | | | | 9 | G Elias | 6$^4$ | 7$^7$ | 6 | | | | | | | | | | |
| WC | Kyle Seelig | 1 | 3 | ITF | J Sels | 7$^7$ | 6$^4$ | 4 | | | | | | | | | | |
| ITF | J Sels | 6 | 6 | | | | | | 9 | G Elias | 4 | 6 | 1 | | | | | |
| | V Millot | 6 | 6 | | | | | | | V Millot | 6 | 1 | 6 | | | | | |
| | K Uchida | 4 | 4 | | V Millot | 7 | 7$^7$ | | | | | | | | | | | |
| | | | | 6 | D Novikov | 5 | 6$^3$ | | | | | | | | | | | |

### Bottom half
#### Section 3

| 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 | Quarterfinals |
| | | | | 5 | S Giraldo | 6 | 6 | | | | | | | | | | | |
| | F Coria | 4 | 1 | | E King | 4 | 4 | | | | | | | | | | | |
| | E King | 6 | 6 | | | | | | 5 | S Giraldo | 1 | 4 | | | | | | |
| | V Šafránek | 3 | 2 | | | | | | | S Griekspoor | 6 | 6 | | | | | | |
| | S Griekspoor | 6 | 6 | | S Griekspoor | 3 | 6 | 6 | | | | | | | | | | |
| | | | | 10 | N Serdarušić | 6 | 3 | 4 | | | | | | | | | | |
| | | | | | | | | | | | | | | | S Griekspoor | 7$^9$ | 3 | 6 |
| | | | | | | | | | | | | | | 4 | U Ignatik | 6$^7$ | 6 | 3 |
| | | | | 14 | J Tatlot | 4 | 1 | | | | | | | | | | | |
| | A Collarini | 6$^4$ | 2 | | E Couacaud | 6 | 6 | | | | | | | | | | | |
| | E Couacaud | 7$^7$ | 6 | | | | | | | E Couacaud | 3 | 6 | 6$^1$ | | | | | |
| | U Blanch | 6$^2$ | 4 | | | | | | 4 | U Ignatik | 6 | 3 | 7$^7$ | | | | | |
| Q | G Brouwer | 7$^7$ | 6 | Q | G Brouwer | 6 | 6$^6$ | 2 | | | | | | | | | | |
| | | | | 4 | U Ignatik | 3 | 7$^8$ | 6 | | | | | | | | | | |

#### Section 4

| 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 |
| | | | | | 7 | B Bonzi | 3 | 3 | | | | | | | | | | |
| | J Choinski | 6 | 6 | | | J Choinski | 6 | 6 | | | | | | | | | | |
| | A González | 2 | 3 | | | | | | | | J Choinski | 7$^7$ | 4 | 6 | | | | |
| | L Grigelis | 3 | 6 | 7 | | | | | | | L Grigelis | 6$^4$ | 6 | 2 | | | | |
| | L Broady | 6 | 0 | 5 | | L Grigelis | 3 | 6 | 6 | | | | | | | | | |
| | | | | | 11 | M Bourgue | 6 | 3 | 4 | | | | | | | | | |
| | | | | | | | | | | | | | | | | J Choinski | 2 | 1 |
| | | | | | | | | | | | | | | | WC | J. J. Wolf | 6 | 6 |
| | | | | | 15 | G Mager | 6 | 3 | 5 | | | | | | | | | |
| WC | J. J. Wolf | 6 | 7$^7$ | | WC | J. J. Wolf | 4 | 6 | 7 | | | | | | | | | |
| | S Kozlov | 2 | 6$^4$ | | | | | | | WC | J. J. Wolf | 6 | 6 | | | | | |
| WC | Martin Joyce | 4 | 6 | 4 | | | | | | 2 | F Peliwo | 0 | 0 | | | | | |
| | R Ojeda Lara | 6 | 2 | 6 | | R Ojeda Lara | 7 | 3 | 3 | | | | | | | | | |
| | | | | | 2 | F Peliwo | 5 | 6 | 6 | | | | | | | | | |