# 2012 Marburg Open – Singles

The 2012 Marburg Open was a professional tennis tournament played on hard courts. It was the third edition of the tournament which was part of the 2012 ATP Challenger Tour. It took place in Marburg, Germany between 25 June and 1 July 2012.
Björn Phau was the defending champion but chose to compete in Wimbledon instead. Jan Hájek won the tournament by defeating Andreas Haider-Maurer 6–2, 6–2 in the final.

## Seeds

* Horacio Zeballos (quarterfinals)
* Daniel Gimeno-Traver (second round)
* Jan Hájek (champion)
* Aljaž Bedene (first round)
* Teymuraz Gabashvili (quarterfinals)
* Júlio Silva (second round)
* Gastão Elias (first round)
* Andreas Haider-Maurer (final)

## 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 | Finals | Finals | Finals | Finals |
| | Marius Copil | 3 | 6 | 3 | | | | |
| 3 | Jan Hájek | 6 | 3 | 6 | | | | |
| 3 | Jan Hájek | 6 | 3 | 6 | 3 | Jan Hájek | 6 | 6 |
| | | | | | 8 | Andreas Haider-Maurer | 2 | 2 |
| 8 | Andreas Haider-Maurer | 7 | 6 | | 8 | Andreas Haider-Maurer | 2 | 2 |
| | Javier Martí | 5 | 4 | | | | | |

### 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 | Semifinals |
| 1 | H Zeballos | 6 | 4 | 6 | | | | | | | | | | | | | | |
| Q | Tim Puetz | 3 | 6 | 0 | 1 | H Zeballos | 6 | 7 | | | | | | | | | | |
| | H Heliövaara | 3 | 1 | | | P Červenák | 2 | 5 | | | | | | | | | | |
| | P Červenák | 6 | 6 | | | | | | 1 | H Zeballos | 6$^4$ | 7$^7$ | 1 | | | | | |
| | I Navarro | 6 | 6 | | | | | | | M Copil | 7$^7$ | 6$^2$ | 6 | | | | | |
| | Hiroki Moriya | 4 | 3 | | | I Navarro | 3 | 1 | | | | | | | | | | |
| | M Copil | 3 | 6 | 6 | | M Copil | 6 | 6 | | | | | | | | | | |
| 7 | G Elias | 6 | 3 | 1 | | | | | | | | | | | M Copil | 3 | 6 | 3 |
| 3 | J Hájek | 7 | 3 | 6 | | | | | | | | | | 3 | J Hájek | 6 | 3 | 6 |
| Q | U Ignatik | 5 | 6 | 0 | 3 | J Hájek | 7$^7$ | 7$^7$ | | | | | | | | | | |
| | D Lojda | 6 | 4 | 5 | | V Crivoi | 6$^4$ | 6$^3$ | | | | | | | | | | |
| | V Crivoi | 1 | 6 | 7 | | | | | 3 | J Hájek | 6 | 6 | | | | | | |
| | P Sousa | 4 | 2 | | | | | | 5 | T Gabashvili | 4 | 4 | | | | | | |
| WC | K Krawietz | 6 | 6 | | WC | K Krawietz | 4 | 4 | | | | | | | | | | |
| Q | Markus Eriksson | 2 | 5 | | 5 | T Gabashvili | 6 | 6 | | | | | | | | | | |
| 5 | T Gabashvili | 6 | 7 | | | | | | | | | | | | | | | |

### 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 | A Haider-Maurer | 6$^6$ | 6 | 6 | | | | | | | | | | | | | | |
| | S Vagnozzi | 7$^8$ | 4 | 2 | 8 | A Haider-Maurer | 6 | 6 | | | | | | | | | | |
| | V Millot | 4 | 1 | | | R Albot | 2 | 1 | | | | | | | | | | |
| | R Albot | 6 | 6 | | | | | | | 8 | A Haider-Maurer | 6 | 6 | | | | | |
| | M Lammer | 7$^7$ | 6 | | | | | | | | S Greul | 3 | 4 | | | | | |
| WC | Constantin Christ | 6$^4$ | 3 | | | M Lammer | 0$^r$ | | | | | | | | | | | |
| | S Greul | 6 | 7 | | | S Greul | 6 | | | | | | | | | | | |
| 4 | A Bedene | 4 | 5 | | | | | | | | | | | | 8 | A Haider-Maurer | 7 | 6 |
| 6 | J Silva | 6 | 6 | | | | | | | | | | | | | J Martí | 5 | 4 |
| WC | Robin Kern | 2 | 3 | | 6 | J Silva | 0 | 4 | | | | | | | | | | |
| WC | Julian Lenz | 7 | 2$^r$ | | | J Martí | 6 | 6 | | | | | | | | | | |
| | J Martí | 5 | 6 | | | | | | | | J Martí | 3 | 6 | 6 | | | | |
| | M Zverev | 6 | 7 | | | | | | | | M Zverev | 6 | 4 | 2 | | | | |
| | D Gremelmayr | 2 | 5 | | | M Zverev | 4 | 7$^7$ | 7$^7$ | | | | | | | | | |
| Q | Nils Langer | 2 | 4 | | 2 | D Gimeno-Traver | 6 | 6$^5$ | 6$^5$ | | | | | | | | | |
| 2 | D Gimeno-Traver | 6 | 6 | | | | | | | | | | | | | | | |