# 2017 Las Vegas Challenger – Singles

Sam Groth was the defending champion but retired in the second round against Jan Choinski.
Stefan Kozlov won the title after defeating Liam Broady 3–6, 7–5, 6–4 in the final.

## Seeds

* Tennys Sandgren (semifinals)
* Cameron Norrie (second round)
* Bjorn Fratangelo (first round)
* Stefan Kozlov (champion)
* Nikola Milojević (first round)
* Michael Mmoh (second round)
* Sam Groth (second round, retired)
* Reilly Opelka (quarterfinals)

## 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 | Final |
| 1 | Tennys Sandgren | 3 | 6$^6$ | | | | | |
| 4 | Stefan Kozlov | 6 | 7$^8$ | | | | | |
| 4 | Stefan Kozlov | 6 | 7$^8$ | 4 | Stefan Kozlov | 3 | 7 | 6 |
| | | | | | Liam Broady | 6 | 5 | 4 |
| | Evan King | 4 | 5 | | Liam Broady | 6 | 5 | 4 |
| | Liam Broady | 6 | 7 | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | T Sandgren | 6 | 6 | | | | | | | | | | | | | | |
| Q | B Lock | 2 | 4 | | 1 | T Sandgren | 7 | 6 | | | | | | | | | |
| | L Miedler | 7$^{13}$ | 4 | 7 | | L Miedler | 5 | 4 | | | | | | | | | |
| Q | Karue Sell | 6$^{11}$ | 6 | 5 | | | | | | 1 | T Sandgren | 6 | 6 | | | | |
| WC | A Cozbinov | 6 | 4 | 4 | | | | | | Q | J Choinski | 1 | 0 | | | | |
| Q | J Choinski | 4 | 6 | 6 | Q | J Choinski | 2 | | | | | | | | | | |
| WC | M Torpegaard | 3 | 4 | | 7 | S Groth | 1$^r$ | | | | | | | | | | |
| 7 | S Groth | 6 | 6 | | | | | | | | | | | 1 | T Sandgren | 3 | 6$^6$ |
| 4 | S Kozlov | 7 | 6 | | | | | | | | | | | 4 | S Kozlov | 6 | 7$^8$ |
| WC | JC Aragone | 5 | 3 | | 4 | S Kozlov | 6 | 6 | | | | | | | | | |
| | A Sarkissian | 6 | 3 | 2 | | D Köpfer | 4 | 1 | | | | | | | | | |
| | D Köpfer | 2 | 6 | 6 | | | | | | 4 | S Kozlov | 6 | 6 | | | | |
| | K King | 6 | 6 | | | | | | | | K King | 2 | 3 | | | | |
| WC | Ruben Alberts | 2 | 3 | | | K King | 4 | 6 | 6 | | | | | | | | |
| | M Giron | 6 | 7$^7$ | | | M Giron | 6 | 3 | 4 | | | | | | | | |
| 5 | N Milojević | 4 | 6$^1$ | | | | | | | | | | | | | | |

### 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 |
| 6 | M Mmoh | 6 | 6 | | | | | | | | | | | | | | |
| | J Šátral | 4 | 1 | | 6 | M Mmoh | 3 | 6 | 3 | | | | | | | | |
| PR | B Klahn | 3 | 7 | 6 | PR | B Klahn | 6 | 3 | 6 | | | | | | | | |
| SE | C O'Connell | 6 | 5 | 3 | | | | | | PR | B Klahn | 6$^7$ | 6$^6$ | | | | |
| | E King | 6$^4$ | 7$^7$ | 6 | | | | | | | E King | 7$^9$ | 7$^8$ | | | | |
| | D Novikov | 7$^7$ | 6$^4$ | 4 | | E King | 6$^2$ | 6 | 7 | | | | | | | | |
| | B Klein | 7$^7$ | 6 | | | B Klein | 7$^7$ | 3 | 5 | | | | | | | | |
| 3 | B Fratangelo | 6$^2$ | 4 | | | | | | | | | | | | E King | 4 | 5 |
| 8 | R Opelka | 7$^7$ | 6 | | | | | | | | | | | | L Broady | 6 | 7 |
| | J Clarke | 6$^2$ | 4 | | 8 | R Opelka | 7$^7$ | 6 | | | | | | | | | |
| LL | T Garanganga | 2 | 2 | | Q | J Hiltzik | 6$^5$ | 4 | | | | | | | | | |
| Q | Jared Hiltzik | 6 | 6 | | | | | | | 8 | R Opelka | 7$^7$ | 6$^5$ | 4 | | | |
| | L Broady | 7$^7$ | 6 | | | | | | | | L Broady | 6$^2$ | 7$^7$ | 6 | | | |
| LL | A Rybakov | 6$^5$ | 3 | | | L Broady | 7$^7$ | 6 | | | | | | | | | |
| | R Ortega Olmedo | 4 | 3 | | 2 | C Norrie | 6$^5$ | 4 | | | | | | | | | |
| 2 | C Norrie | 6 | 6 | | | | | | | | | | | | | | |