2018 Tampere Open – Men's singles
# 2018 Tampere Open – Men's singles

Calvin Hemery was the defending champion but chose not to defend his title.

Tallon Griekspoor won the title after defeating Juan Ignacio Londero 6–3, 2–6, 6–3 in the final.

## Seeds

* Hugo Dellien (semifinals)
* Pedro Sousa (first round)
* Juan Ignacio Londero (final)
* Marco Trungelliti (quarterfinals)
* Kamil Majchrzak (quarterfinals)
* Tallon Griekspoor (champion)
* Antoine Hoang (quarterfinals)
* Gleb Sakharov (first round)

## 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 | Hugo Dellien | 4 | 2 | | | | | |
| 3 | Juan Ignacio Londero | 6 | 6 | | | | | |
| 3 | Juan Ignacio Londero | 6 | 6 | 3 | Juan Ignacio Londero | 3 | 6 | 3 |
| | | | | 6 | Tallon Griekspoor | 6 | 2 | 6 |
| 6 | Tallon Griekspoor | 6 | 7 | 6 | Tallon Griekspoor | 6 | 2 | 6 |
| Q | Tristan Lamasine | 4 | 5 | | | | | |

### 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 | H Dellien | 6 | 4 | | | | | | | | | | | | | | |
| WC | K Raisma | 3 | $1^r$ | 1 | H Dellien | 6 | 7 | | | | | | | | | | |
| Q | J Sels | 6 | 6 | Q | J Sels | 4 | 5 | | | | | | | | | | |
| | A Collarini | 4 | 3 | | | | | | 1 | H Dellien | $6^5$ | 6 | 6 | | | | |
| | C Gómez-Herrera | $2^r$ | | | | | | | 5 | K Majchrzak | $7^7$ | 3 | 1 | | | | |
| PR | R Bellotti | 3 | | PR | R Bellotti | 0 | 1 | | | | | | | | | | |
| | Patricio Heras | 1 | 4 | 5 | K Majchrzak | 6 | 6 | | | | | | | | | | |
| 5 | K Majchrzak | 6 | 6 | | | | | | | | | | | 1 | H Dellien | 4 | 2 |
| 3 | JI Londero | 6 | 7 | | | | | | | | | | | 3 | JI Londero | 6 | 6 |
| | R Ortega Olmedo | 1 | 5 | 3 | JI Londero | 3 | 6 | 6 | | | | | | | | | |
| Q | R Marcora | 6 | 6 | Q | R Marcora | 6 | 4 | 2 | | | | | | | | | |
| WC | E Ruusuvuori | 3 | 4 | | | | | | 3 | JI Londero | $7^7$ | 6 | | | | | |
| WC | P Niklas-Salminen | 2 | $6^5$ | | | | | | 7 | A Hoang | $6^5$ | 4 | | | | | |
| Q | I Gakhov | 6 | $7^7$ | Q | I Gakhov | 5 | 6 | 1 | | | | | | | | | |
| WC | H Heliövaara | 0 | 4 | 7 | A Hoang | 7 | 2 | 6 | | | | | | | | | |
| 7 | A Hoang | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 6 | T Griekspoor | 6 | 6 | | | | | | | | | | | | | | |
| | G Blancaneaux | 1 | 3 | | 6 | T Griekspoor | 6 | 6 | | | | | | | | | |
| | M Cuevas | 6 | 4 | 6 | | M Cuevas | 4 | 4 | | | | | | | | | |
| | P Cachin | 3 | 6 | 3 | | | | | | 6 | T Griekspoor | 6 | 6 | | | | |
| SE | K Coppejans | 6 | 6 | | | | | | | 4 | M Trungelliti | 3 | 3 | | | | |
| | J Souza | 3 | 4 | | SE | K Coppejans | $6^5$ | $7^7$ | 5 | | | | | | | | |
| | C İlkel | 6 | 3 | 4 | 4 | M Trungelliti | $7^7$ | $6^4$ | 7 | | | | | | | | |
| 4 | M Trungelliti | 3 | 6 | 6 | | | | | | | | | | 6 | T Griekspoor | 6 | 7 |
| 8 | G Sakharov | $6^1$ | 2 | | | | | | | | | | | Q | T Lamasine | 4 | 5 |
| | F Baldi | $7^7$ | 6 | | | F Baldi | 4 | 5 | | | | | | | | | |
| | M Vilella Martínez | 3 | $3^r$ | | Q | T Lamasine | 6 | 7 | | | | | | | | | |
| Q | T Lamasine | 6 | 4 | | | | | | | Q | T Lamasine | $7^7$ | 6 | | | | |
| | N Kuhn | $6^5$ | 1 | | | | | | | | T de Bakker | $6^2$ | 1 | | | | |
| | T de Bakker | $7^7$ | 6 | | | T de Bakker | 6 | 3 | 6 | | | | | | | | |
| | E Benchetrit | 6 | 6 | | | E Benchetrit | 4 | 6 | 1 | | | | | | | | |
| 2 | P Sousa | 3 | 2 | | | | | | | | | | | | | | |
