# 2013 Comerica Bank Challenger – Singles

Steve Johnson was the defending champion, but lost to Donald Young in the first round. Bradley Klahn won the title over Dan Evans 3–6, 7–6$^{(7–5)}$, 6–4

## Seeds

* Guido Pella (quarterfinals)
* Evgeny Donskoy (semifinals)
* Steve Johnson (first round)
* Ryan Harrison (first round)
* Wayne Odesnik (quarterfinals)
* Bobby Reynolds (first round)
* Mischa Zverev (quarterfinals)
* Jimmy Wang (second round)

## Main 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 |
| SE | Dan Evans | 7$^7$ | 6 | | | | | | |
| Q | Farrukh Dustov | 6$^2$ | 3 | | | | | | |
| Q | Farrukh Dustov | 6$^2$ | 3 | | SE | Dan Evans | 6 | 6$^5$ | 4 |
| | | | | | | Bradley Klahn | 3 | 7$^7$ | 6 |
| | Bradley Klahn | 7$^7$ | 5 | 6 | | Bradley Klahn | 3 | 7$^7$ | 6 |
| 2 | Evgeny Donskoy | 6$^1$ | 7 | 4 | | | | | |

### 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 | G Pella | 6 | 6 | | | | | | | | | | | | | | | |
| | M Jaziri | 4 | 2 | | 1 | G Pella | 6 | 6 | | | | | | | | | | |
| | J Duckworth | 6 | 4 | 1 | | B Baker | 4 | 4 | | | | | | | | | | |
| | B Baker | 4 | 6 | 6 | | | | | | 1 | G Pella | 5 | 1 | | | | | |
| WC | M Krueger | 1 | 2 | | | | | | | SE | D Evans | 7 | 6 | | | | | |
| SE | D Evans | 6 | 6 | | SE | D Evans | 2 | 6 | 6 | | | | | | | | | |
| SE | G Jones | 0 | 0 | | 8 | J Wang | 6 | 4 | 3 | | | | | | | | | |
| 8 | J Wang | 6 | 6 | | | | | | | | | | | | SE | D Evans | 7$^7$ | 6 |
| 4 | R Harrison | 3 | 6 | 5 | | | | | | | | | | | Q | F Dustov | 6$^2$ | 3 |
| Q | J McGee | 6 | 3 | 7 | Q | J McGee | 2 | 1 | | | | | | | | | | |
| Q | F Dustov | 6 | 7 | | Q | F Dustov | 6 | 6 | | | | | | | | | | |
| | O Rochus | 4 | 5 | | | | | | | Q | F Dustov | 7$^7$ | 3 | 6 | | | | |
| | M Authom | 1 | 4 | | | | | | | WC | T Sandgren | 6$^5$ | 6 | 0 | | | | |
| WC | T Sandgren | 6 | 6 | | WC | T Sandgren | 4 | 6 | 6 | | | | | | | | | |
| | Y Sugita | 7 | 6 | | | Y Sugita | 6 | 3 | 4 | | | | | | | | | |
| 6 | B Reynolds | 5 | 2 | | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 5 | W Odesnik | 6 | 6$^4$ | 6 | | | | | | | | | | | | | | | |
| LL | J Ward | 3 | 7$^7$ | 4 | 5 | W Odesnik | 6 | 6 | | | | | | | | | | | |
| Q | D Molchanov | 6 | 6 | | Q | D Molchanov | 3 | 2 | | | | | | | | | | | |
| | H Moriya | 4 | 2 | | | | | | | 5 | W Odesnik | 5 | 6 | 2 | | | | | |
| | B Klahn | 7$^7$ | 6 | | | | | | | | B Klahn | 7 | 4 | 6 | | | | | |
| | T Ito | 6$^5$ | 3 | | | B Klahn | 6 | 6 | | | | | | | | | | | |
| | D Young | 2 | 6 | 7$^7$ | | D Young | 4 | 4 | | | | | | | | | | | |
| 3 | S Johnson | 6 | 3 | 6$^3$ | | | | | | | | | | | | B Klahn | 7$^7$ | 5 | 6 |
| 7 | M Zverev | 4 | 6 | 6 | | | | | | | | | | | 2 | E Donskoy | 6$^1$ | 7 | 4 |
| | M Kukushkin | 6 | 4 | 4 | 7 | M Zverev | 7$^7$ | 6 | | | | | | | | | | | |
| | M Reid | 4 | 6 | 2 | WC | D Novikov | 6$^5$ | 2 | | | | | | | | | | | |
| WC | D Novikov | 6 | 2 | 6 | | | | | | 7 | M Zverev | 5 | 2 | | | | | | |
| WC | Andre Dome | 6$^4$ | 4 | | | | | | | 2 | E Donskoy | 7 | 6 | | | | | | |
| | R Bemelmans | 7$^7$ | 6 | | | R Bemelmans | 6 | 6$^4$ | 4 | | | | | | | | | | |
| Q | J-P Smith | 3 | 6 | 6$^4$ | 2 | E Donskoy | 3 | 7$^7$ | 6 | | | | | | | | | | |
| 2 | E Donskoy | 6 | 2 | 7$^7$ | | | | | | | | | | | | | | | |