# 2018 MercedesCup – Singles

Lucas Pouille was the defending champion, but lost in the semifinals to Milos Raonic.
Roger Federer won his first title in Stuttgart, defeating Raonic in the final, 6–4, 7–6$^{(7–3)}$. By reaching the final, Federer regained the ATP no. 1 singles ranking. This was his record extending 18th Grass Court Title and his final ATP 250 title before retiring in 2022.

## Seeds

The top four seeds receive a bye into the second round.
* Roger Federer (champion)
* Lucas Pouille (semifinals)
* Tomáš Berdych (quarterfinals)
* Nick Kyrgios (semifinals)
* Philipp Kohlschreiber (first round)
* Denis Shapovalov (first round)
* Milos Raonic (final)
* Feliciano López (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 | Semifinals | Final | Final | Final | Final |
| 1 | Roger Federer | 6$^2$ | 6 | 7$^7$ | | | | |
| 4 | Nick Kyrgios | 7$^7$ | 2 | 6$^5$ | | | | |
| 4 | Nick Kyrgios | 7$^7$ | 2 | 6$^5$ | 1 | Roger Federer | 6 | 7$^7$ |
| | | | | | 7 | Milos Raonic | 4 | 6$^3$ |
| 7 | Milos Raonic | 6 | 7$^7$ | | 7 | Milos Raonic | 4 | 6$^3$ |
| 2 | Lucas Pouille | 4 | 6$^3$ | | | | | |

### 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 | Semifinals |
| | | | | | 1 | R Federer | 3 | 6 | 6 | | | | | | | | | | |
| Q | M Youzhny | 6$^5$ | 3 | | | M Zverev | 6 | 4 | 2 | | | | | | | | | | |
| | M Zverev | 7$^7$ | 6 | | | | | | | 1 | R Federer | 6 | 6 | | | | | | |
| | G Pella | 6 | 6 | | | | | | | | G Pella | 4 | 4 | | | | | | |
| | J Millman | 2 | 2 | | | G Pella | 7$^7$ | 6 | | | | | | | | | | | |
| Q | P Gunneswaran | 7$^8$ | 2 | 6 | Q | P Gunneswaran | 6$^4$ | 3 | | | | | | | | | | | |
| 6 | D Shapovalov | 6$^6$ | 6 | 3 | | | | | | | | | | | 1 | R Federer | 6$^2$ | 6 | 7$^7$ |
| | | | | | | | | | | | | | | | 4 | N Kyrgios | 7$^7$ | 2 | 6$^5$ |
| | | | | | 4 | N Kyrgios | 6 | 4 | 6 | | | | | | | | | | |
| | M Marterer | 3 | 6 | 6 | | M Marterer | 4 | 6 | 3 | | | | | | | | | | |
| LL | V Galović | 6 | 4 | 1 | | | | | | 4 | N Kyrgios | 6 | 3 | 6 | | | | | |
| | G Simon | 6 | 6 | | | | | | | 8 | F López | 4 | 6 | 3 | | | | | |
| Q | M Viola | 0 | 3 | | | G Simon | 6$^6$ | 4 | | | | | | | | | | | |
| | V Troicki | 1 | 0$^r$ | | 8 | F López | 7$^8$ | 6 | | | | | | | | | | | |
| 8 | F López | 6 | 0 | | | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 7 | M Raonic | 7$^{10}$ | 6 | | | | | | | | | | | | | | |
| | M Bašić | 6$^8$ | 2 | | 7 | M Raonic | 6 | 6 | | | | | | | | | |
| | M Fucsovics | 6 | 6 | | | M Fucsovics | 2 | 4 | | | | | | | | | |
| Q | D Kudla | 3 | 4 | | | | | | 7 | M Raonic | 7$^7$ | 7$^7$ | | | | | |
| | B Paire | 6$^4$ | 6 | 6 | | | | | 3 | T Berdych | 6$^2$ | 6$^1$ | | | | | |
| | T Fritz | 7$^7$ | 3 | 2 | | B Paire | 6$^3$ | 4 | | | | | | | | | |
| | | | | | 3 | T Berdych | 7$^7$ | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 7 | M Raonic | 6 | 7$^7$ |
| 5 | P Kohlschreiber | 6$^2$ | 6$^3$ | | | | | | | | | | | 2 | L Pouille | 4 | 6$^3$ |
| | D Istomin | 7$^7$ | 7$^7$ | | | D Istomin | 6 | 6 | | | | | | | | | |
| | F Mayer | 6 | 6 | | | F Mayer | 3 | 4 | | | | | | | | | |
| WC | Y Maden | 4 | 1 | | | | | | | D Istomin | 4 | 7$^7$ | 3 | | | | |
| WC | R Molleker | 6 | 6$^5$ | 6 | | | | | 2 | L Pouille | 6 | 6$^5$ | 6 | | | | |
| | J-L Struff | 4 | 7$^7$ | 3 | WC | R Molleker | 3 | 4 | | | | | | | | | |
| | | | | | 2 | L Pouille | 6 | 6 | | | | | | | | | |

## Qualifying
### Seeds

* Mikhail Youzhny (qualified)
* Lukáš Lacko (first round)
* Ruben Bemelmans (first round)
* Denis Kudla (qualified)
* Matthias Bachinger (first round)
* Andrej Martin (first round)
* Viktor Galović (qualifying competition, lucky loser)
* Prajnesh Gunneswaran (qualified)

### Qualifiers

* Mikhail Youzhny
* Matteo Viola
* Prajnesh Gunneswaran
* Denis Kudla

### Lucky loser

* Viktor Galović

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Mikhail Youzhny | 6 | 6 | | | | |
| | David Guez | 2 | 3 | | | | |
| | David Guez | 2 | 3 | 1 | Mikhail Youzhny | 6 | 6 |
| | | | | PR | Egor Gerasimov | 3 | 2 |
| PR | Egor Gerasimov | 7$^7$ | 6 | PR | Egor Gerasimov | 3 | 2 |
| 5 | Matthias Bachinger | 6$^5$ | 4 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Lukáš Lacko | 7$^7$ | 5 | 1 | | | | |
| WC | Tim Pütz | 6$^3$ | 7 | 6 | | | | |
| WC | Tim Pütz | 6$^3$ | 7 | 6 | WC | Tim Pütz | 3 | 6$^1$ |
| | | | | | | Matteo Viola | 6 | 7$^7$ |
| | Matteo Viola | 6 | 6 | | | Matteo Viola | 6 | 7$^7$ |
| 6 | Andrej Martin | 4 | 3 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Ruben Bemelmans | 5 | 6$^4$ | | | | | |
| | Christian Harrison | 7 | 7$^7$ | | | | | |
| | Christian Harrison | 7 | 7$^7$ | | Christian Harrison | 3 | 6 | 3 |
| | | | | 8 | Prajnesh Gunneswaran | 6 | 4 | 6 |
| | Evan King | 1 | 4 | 8 | Prajnesh Gunneswaran | 6 | 4 | 6 |
| 8 | Prajnesh Gunneswaran | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Denis Kudla | 7$^7$ | 6 | | | | | |
| | Jan Choinski | 6$^4$ | 3 | | | | | |
| | Jan Choinski | 6$^4$ | 3 | 4 | Denis Kudla | 3 | 6 | 6 |
| | | | | 7 | Viktor Galović | 6 | 4 | 3 |
| WC | Philipp Petzschner | 1 | 4 | 7 | Viktor Galović | 6 | 4 | 3 |
| 7 | Viktor Galović | 6 | 6 | | | | | |