# 2011 USTA Challenger of Oklahoma – Singles

Bobby Reynolds defended his title by defeating Michael McClune 6–1, 6–3 in the final.

## Seeds

* Sam Querrey (semifinals)
* Michael Russell (semifinals, withdrew due to illness)
* Bobby Reynolds (champion)
* Wayne Odesnik (second round, retired due to a quad strain)
* Víctor Estrella (first round)
* Rajeev Ram (quarterfinals)
* Tim Smyczek (quarterfinals)
* Alex Kuznetsov (first round, retired due to a quad strain)

## 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 |
| 1 | Sam Querrey | 6 | 6$^7$ | 4 | | | | |
| Q | Michael McClune | 4 | 7$^9$ | 6 | | | | |
| Q | Michael McClune | 4 | 7$^9$ | 6 | Q | Michael McClune | 1 | 3 |
| | | | | | 3 | Bobby Reynolds | 6 | 6 |
| 3 | Bobby Reynolds | w/o | | | 3 | Bobby Reynolds | 6 | 6 |
| 2 | Michael Russell | | | | | | | |

### 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 | Semifinals |
| 1 | S Querrey | 7 | 6 | | | | | | | | | | | | | | |
| | D Martin | 5 | 2 | 1 | S Querrey | 7 | 7 | | | | | | | | | | |
| WC | M Shabaz | 6 | 7$^7$ | WC | M Shabaz | 5 | 5 | | | | | | | | | | |
| | Greg Ouellette | 4 | 6$^4$ | | | | | | 1 | S Querrey | 6 | 6 | | | | | |
| WC | J Sock | 2 | 4 | | | | | | | A Bogdanovic | 4 | 4 | | | | | |
| | A Bogdanovic | 6 | 6 | | A Bogdanovic | 6 | 7 | | | | | | | | | | |
| Q | C Wettengel | 6 | 5 | Q | C Wettengel | 2 | 5 | | | | | | | | | | |
| 8 | A Kuznetsov | 4 | 2$^r$ | | | | | | | | | | 1 | S Querrey | 6 | 6$^7$ | 4 |
| 4 | W Odesnik | 6 | 6 | | | | | | | | | | Q | M McClune | 4 | 7$^9$ | 6 |
| | S Betov | 1 | 2 | 4 | W Odesnik | 4 | 2$^r$ | | | | | | | | | | |
| | J Peers | 4 | 4 | Q | M McClune | 6 | 3 | | | | | | | | | | |
| Q | M McClune | 6 | 6 | | | | | | Q | M McClune | 7$^8$ | 6 | | | | | |
| | D Kosakowski | 6 | 6 | | | | | | | D Kosakowski | 6$^6$ | 4 | | | | | |
| | A Sitak | 2 | 1 | | D Kosakowski | 6 | 4 | 6 | | | | | | | | | |
| | K Kim | 6 | 6 | | K Kim | 3 | 6 | 4 | | | | | | | | | |
| 5 | V Estrella | 1 | 2 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 7 | T Smyczek | 6 | 6 | | | | | | | | | | | | | |
| | D Kudla | 3 | 1 | | 7 | T Smyczek | 7 | 6 | | | | | | | | |
| WC | J-P Smith | 6 | 6$^3$ | 6 | WC | J-P Smith | 5 | 2 | | | | | | | | |
| | A El Mihdawy | 1 | 7$^7$ | 4 | | | | | 7 | T Smyczek | 0 | 2 | | | | |
| | Luca Margaroli | 1 | 1 | | | | | | 3 | B Reynolds | 6 | 6 | | | | |
| | C Eaton | 6 | 6 | | | C Eaton | 2 | 2 | | | | | | | | |
| | B Strode | 7$^7$ | 3 | 4 | 3 | B Reynolds | 6 | 6 | | | | | | | | |
| 3 | B Reynolds | 6$^3$ | 6 | 6 | | | | | | | | | | 3 | B Reynolds | w/o |
| 6 | R Ram | 6 | 6 | | | | | | | | | | | 2 | M Russell | |
| | Bumpei Sato | 2 | 1 | | 6 | R Ram | 6 | 6 | | | | | | | | |
| Q | A Dăescu | 6 | 2 | 4 | | C Gârd | 2 | 1 | | | | | | | | |
| | C Gârd | 1 | 6 | 6 | | | | | 6 | R Ram | 1 | 6 | 3 | | | |
| WC | J Dadamo | 7$^{15}$ | 3 | 6$^4$ | | | | | 2 | M Russell | 6 | 3 | 6 | | | |
| | L Díaz Barriga | 6$^{13}$ | 6 | 7$^7$ | | L Díaz Barriga | 1 | 0 | | | | | | | | |
| Q | Costin Pavăl | 2 | 5 | | 2 | M Russell | 6 | 6 | | | | | | | | |
| 2 | M Russell | 6 | 7 | | | | | | | | | | | | | |