# 2011 Royal Bank of Scotland Challenger – Singles

Tobias Kamke was the defending champion but decided not to participate. Ivo Karlović won the tournament after defeating Sam Querrey 6–7$^{(2–7)}$, 6–1, 6–4 in the final.

## Seeds

* Ryan Sweeting (semifinals)
* Ivo Karlović (champion)
* Sam Querrey (final)
* Bobby Reynolds (second round)
* Vasek Pospisil (quarterfinals)
* Izak van der Merwe (first round)
* Wayne Odesnik (second round)
* Björn Phau (semifinals)

## 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 | Ryan Sweeting | 4 | 3 | | | | | |
| 3 | Sam Querrey | 6 | 6 | | | | | |
| 3 | Sam Querrey | 6 | 6 | 3 | Sam Querrey | 7$^7$ | 1 | 4 |
| | | | | 2 | Ivo Karlović | 6$^2$ | 6 | 6 |
| 8 | Björn Phau | 5 | 5 | 2 | Ivo Karlović | 6$^2$ | 6 | 6 |
| 2 | Ivo Karlović | 7 | 7 | | | | | |

### Top 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 | Semifinals |
| 1 | R Sweeting | 4 | 6 | 6 | | | | | | | | | | | | | |
| WC | S Johnson | 6 | 2 | 2 | 1 | R Sweeting | 6 | 6 | | | | | | | | | |
| | C Guccione | 6$^1$ | 3 | | Q | A Bogdanovic | 2 | 1 | | | | | | | | | |
| Q | A Bogdanovic | 7$^7$ | 6 | | | | | | 1 | R Sweeting | 6 | 3 | 6 | | | | |
| | JS Cabal | 6 | 4 | 6$^6$ | | | | | 5 | V Pospisil | 2 | 6 | 1 | | | | |
| | R Borvanov | 1 | 6 | 7$^8$ | | R Borvanov | 3 | 0 | | | | | | | | | |
| WC | D Kudla | 5 | 0$^r$ | | 5 | V Pospisil | 6 | 6 | | | | | | | | | |
| 5 | V Pospisil | 7 | 2 | | | | | | | | | | | 1 | R Sweeting | 4 | 3 |
| 3 | S Querrey | 6 | 6 | | | | | | | | | | | 3 | S Querrey | 6 | 6 |
| | F Wolmarans | 4 | 4 | | 3 | S Querrey | 6 | 6 | | | | | | | | | |
| Q | A Sitak | 6 | 4 | 2 | | A Delić | 4 | 2 | | | | | | | | | |
| | A Delić | 4 | 6 | 6 | | | | | 3 | S Querrey | 6 | 6 | | | | | |
| Q | P-L Duclos | 7 | 1 | 3 | | | | | SE | A Kuznetsov | 1 | 4 | | | | | |
| | U Ignatik | 5 | 6 | 6 | | U Ignatik | 6$^8$ | 5 | | | | | | | | | |
| SE | A Kuznetsov | 6 | 4 | 7 | SE | A Kuznetsov | 7$^{10}$ | 7 | | | | | | | | | |
| 6 | I van der Merwe | 4 | 6 | 5 | | | | | | | | | | | | | |

### 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 | B Phau | 4 | 7$^7$ | 6 | | | | | | | | | | | | | | |
| | G Jones | 6 | 6$^5$ | 1 | 8 | B Phau | 6 | 6 | | | | | | | | | | |
| WC | J Sock | 6 | 0 | 3 | Q | A González | 2 | 2 | | | | | | | | | | |
| Q | A González | 4 | 6 | 6 | | | | | | 8 | B Phau | 6 | 6 | | | | | |
| | L Grigelis | 6 | 6 | | | | | | | | L Grigelis | 3 | 2 | | | | | |
| | F Nielsen | 3 | 3 | | | L Grigelis | 7$^7$ | 3 | 6 | | | | | | | | | |
| | R Klaasen | 4 | 3 | | 4 | B Reynolds | 6$^3$ | 6 | 4 | | | | | | | | | |
| 4 | B Reynolds | 6 | 6 | | | | | | | | | | | | 8 | B Phau | 5 | 5 |
| 7 | W Odesnik | 6 | | | | | | | | | | | | | 2 | I Karlović | 7 | 7 |
| | T de Bakker | 1 | r | | 7 | W Odesnik | 7$^8$ | 3 | 1 | | | | | | | | | |
| | M Fischer | 6 | 6 | | | M Fischer | 6$^6$ | 6 | 6 | | | | | | | | | |
| | S Greul | 3 | 3 | | | | | | | | M Fischer | 5 | 6 | 3 | | | | |
| WC | D Kosakowski | 4 | 6 | 6$^4$ | | | | | | 2 | I Karlović | 7 | 4 | 6 | | | | |
| Alt | R Farah | 6 | 4 | 7$^7$ | Alt | R Farah | 6$^2$ | 2 | | | | | | | | | | |
| | D Gremelmayr | 7$^7$ | 1$^r$ | | 2 | I Karlović | 7$^7$ | 6 | | | | | | | | | | |
| 2 | I Karlović | 6$^4$ | 2 | | | | | | | | | | | | | | | |