# 2005 Porsche Tennis Grand Prix – Singles

Defending champion Lindsay Davenport defeated Amélie Mauresmo in a rematch of the previous year's final, 6–2, 6–4 to win the singles tennis title at the 2005 Stuttgart Open.

## Seeds

The first four seeds received a bye into the second round.
* Lindsay Davenport (champion)
* Kim Clijsters (quarterfinals)
* Amélie Mauresmo (final)
* Justine Henin-Hardenne (second round)
* Elena Dementieva (semifinals)
* Nadia Petrova (quarterfinals)
* Patty Schnyder (second round)
* Anastasia Myskina (quarterfinals)

## 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 |
| 1 | Lindsay Davenport | 6 | 6 | | | | |
| | Daniela Hantuchová | 4 | 3 | | | | |
| | Daniela Hantuchová | 4 | 3 | 1 | Lindsay Davenport | 6 | 6 |
| | | | | 3 | Amélie Mauresmo | 2 | 4 |
| 3 | Amélie Mauresmo | 6 | 6 | 3 | Amélie Mauresmo | 2 | 4 |
| 5 | Elena Dementieva | 3 | 4 | | | | |

### Top half

| 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 | L Davenport | 6 | 6 | | | | | | | | | | |
| | F Schiavone | 6 | 6 | | F Schiavone | 2 | 2 | | | | | | | | | | |
| | A Chakvetadze | 3 | 3 | | | | | | 1 | L Davenport | 6 | 3 | 6 | | | | |
| | D Safina | 6 | 6 | | | | | | 8 | A Myskina | 2 | 6 | 1 | | | | |
| WC | S Klösel | 2 | 2 | | D Safina | 6$^6$ | 7$^7$ | 5 | | | | | | | | | |
| Q | S Gehrlein | 1 | 4 | 8 | A Myskina | 7$^8$ | 6$^3$ | 7 | | | | | | | | | |
| 8 | A Myskina | 6 | 6 | | | | | | | | | | | 1 | L Davenport | 6 | 6 |
| | | | | | | | | | | | | | | | D Hantuchová | 4 | 3 |
| | | | | 4 | J Henin-Hardenne | 4 | 3 | | | | | | | | | | |
| | F Pennetta | 7 | 6 | | F Pennetta | 6 | 6 | | | | | | | | | | |
| WC | J Schruff | 5 | 2 | | | | | | | F Pennetta | 3 | 4 | | | | | |
| WC | M Shaughnessy | 4 | 0 | | | | | | | D Hantuchová | 6 | 6 | | | | | |
| | D Hantuchová | 6 | 6 | | D Hantuchová | 6 | 6 | | | | | | | | | | |
| | A Ivanovic | 1 | 2 | 7 | P Schnyder | 4 | 3 | | | | | | | | | | |
| 7 | P Schnyder | 6 | 6 | | | | | | | | | | | | | | |

### 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 |
| 6 | N Petrova | 6 | 6 | | | | | | | | | | | | | | | |
| | AL Grönefeld | 3 | 2 | | 6 | N Petrova | 6 | 6 | | | | | | | | | | |
| | E Likhovtseva | 4 | 7 | 6 | | E Likhovtseva | 1 | 1 | | | | | | | | | | |
| | S Farina Elia | 6 | 5 | 3 | | | | | | 6 | N Petrova | 6 | 2 | 4 | | | | |
| | A Medina Garrigues | 2 | 2 | | | | | | | 3 | A Mauresmo | 2 | 6 | 6 | | | | |
| | J Janković | 6 | 6 | | | J Janković | 0 | r | | | | | | | | | | |
| | | | | | 3 | A Mauresmo | 6 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 3 | A Mauresmo | 6 | 6 |
| 5 | E Dementieva | 6 | 6 | | | | | | | | | | | | 5 | E Dementieva | 3 | 4 |
| Q | Z Ondrášková | 2 | 4 | | 5 | E Dementieva | 5 | 6 | 6 | | | | | | | | | |
| | N Dechy | 6 | 6 | | | N Dechy | 7 | 3 | 4 | | | | | | | | | |
| | A Molik | 3 | 3 | | | | | | | 5 | E Dementieva | 6 | 3 | 6 | | | | |
| Q | E Daniilidou | 3 | 6 | 5 | | | | | | 2 | K Clijsters | 3 | 6 | 2 | | | | |
| Q | K Šprem | 6 | 3 | 7 | Q | K Šprem | 3 | 2 | | | | | | | | | | |
| | | | | | 2 | K Clijsters | 6 | 6 | | | | | | | | | | |