# 2013 Napa Valley Challenger – Singles

This was the first edition of the event.
Donald Young won the title, defeating Matthew Ebden in the final, 4–6, 6–4, 6–2.

## Seeds

* Denis Kudla (quarterfinals)
* Tim Smyczek (semifinals)
* Rhyne Williams (quarterfinals)
* Alex Kuznetsov (semifinals)
* Bradley Klahn (quarterfinals)
* Matthew Ebden (final)
* Steve Johnson (first round)
* Donald Young (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 | Final |
| 6 | Matthew Ebden | 6 | 6 | | | | | |
| 4 | Alex Kuznetsov | 2 | 0 | | | | | |
| 4 | Alex Kuznetsov | 2 | 0 | 6 | Matthew Ebden | 6 | 4 | 2 |
| | | | | 8 | Donald Young | 4 | 6 | 6 |
| 8 | Donald Young | 6 | 6 | 8 | Donald Young | 4 | 6 | 6 |
| 2/WC | Tim Smyczek | 3 | 2 | | | | | |

### 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 | D Kudla | 6 | 6 | | | | | | | | | | | | | |
| | E Corrie | 0 | 2 | 1 | D Kudla | 6 | 6 | | | | | | | | | |
| | P Polansky | 6 | 6 | | P Polansky | 1 | 2 | | | | | | | | | |
| | S Caruso | 1 | 3 | | | | | | 1 | D Kudla | 3 | 5 | | | | |
| | T Sandgren | 7$^7$ | 6 | | | | | | 6 | M Ebden | 6 | 7 | | | | |
| | M Arévalo | 6$^2$ | 1 | | T Sandgren | 6$^5$ | 3 | | | | | | | | | |
| Q | D Kutrovsky | 1 | 2 | 6 | M Ebden | 7$^7$ | 6 | | | | | | | | | |
| 6 | M Ebden | 6 | 6 | | | | | | | | | | 6 | M Ebden | 6 | 6 |
| 4 | A Kuznetsov | 6 | 6 | | | | | | | | | | 4 | A Kuznetsov | 2 | 0 |
| WC | B McLachlan | 1 | 4 | 4 | A Kuznetsov | 6 | 6 | | | | | | | | | |
| | M Reid | 6 | 0 | | M Reid | 4 | 4 | | | | | | | | | |
| | D Molchanov | 1 | 0$^r$ | | | | | | 4 | A Kuznetsov | 6 | 7$^7$ | | | | |
| | R Ginepri | 6 | 6 | | | | | | | M Venus | 2 | 6$^3$ | | | | |
| | N Barrientos | 1 | 1 | | R Ginepri | 6 | 3 | 6$^6$ | | | | | | | | |
| | M Venus | 7$^7$ | 6 | | M Venus | 4 | 6 | 7$^8$ | | | | | | | | |
| 7 | S Johnson | 6$^4$ | 4 | | | | | | | | | | | | | |

### 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 |
| 8 | D Young | 6 | 6 | | | | | | | | | | | | | | | |
| Q | G Ouellette | 3 | 2 | | 8 | D Young | 6 | 6 | | | | | | | | | | |
| WC | D Novikov | 7$^8$ | 2 | 2 | | S Groth | 3 | 1 | | | | | | | | | | |
| | S Groth | 6$^6$ | 6 | 6 | | | | | | 8 | D Young | 6 | 7 | | | | | |
| | B Reynolds | 6 | 6 | | | | | | | 3 | R Williams | 2 | 5 | | | | | |
| | S Singh | 2 | 4 | | | B Reynolds | 4 | 3 | | | | | | | | | | |
| WC | C Altamirano | 2 | 2 | | 3 | R Williams | 6 | 6 | | | | | | | | | | |
| 3 | R Williams | 6 | 6 | | | | | | | | | | | | 8 | D Young | 6 | 6 |
| 5 | B Klahn | 6 | 3 | 7 | | | | | | | | | | | 2/WC | T Smyczek | 3 | 2 |
| | D Evans | 3 | 6 | 5 | 5 | B Klahn | 3 | 6 | 6 | | | | | | | | | |
| Q | T Kokkinakis | 6 | 4 | 7$^7$ | Q | T Kokkinakis | 6 | 3 | 3 | | | | | | | | | |
| Q | J Witten | 3 | 6 | 6$^4$ | | | | | | 5 | B Klahn | 6 | 1 | 2 | | | | |
| | D Cox | 7$^7$ | 6 | | | | | | | 2/WC | T Smyczek | 1 | 6 | 6 | | | | |
| | B Mitchell | 6$^2$ | 1 | | | D Cox | 1 | 1 | | | | | | | | | | |
| | Vijayant Malik | 2 | 2 | | 2/WC | T Smyczek | 6 | 6 | | | | | | | | | | |
| 2/WC | T Smyczek | 6 | 6 | | | | | | | | | | | | | | | |