2018 Tilia Slovenia Open
Date	6–11 August
Edition	6th
Surface	Hard
Location	Portorož, Slovenia
Champions
Singles
Constant Lestienne
Doubles
Gerard Granollers / Lukáš Rosol
← 2017 · Tilia Slovenia Open · 2019 →

The 2018 Tilia Slovenia Open was a professional tennis tournament played on hard courts. It was the sixth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Portorož, Slovenia between 6 – 11 August 2018.

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
UKR	Sergiy Stakhovsky	117	1
AUT	Dennis Novak	136	2
ESP	Adrián Menéndez Maceiras	143	3
ITA	Gianluigi Quinzi	162	4
ITA	Salvatore Caruso	185	5
ITA	Luca Vanni	191	6
CRO	Nino Serdarušić	193	7
ITA	Andrea Arnaboldi	199	8

• ¹ Rankings are as of 30 July 2018.

Other entrants

The following players received wildcards into the singles main draw:

• Aljaž Jakob Kaplja
• Tom Kočevar-Dešman
• Aljaž Radinski
• Nik Razboršek

The following player received entry into the singles main draw as a special exempt:

• Pavel Kotov

The following players received entry from the qualifying draw:

• Altuğ Çelikbilek
• Markus Eriksson
• Aslan Karatsev
• Frederik Nielsen

The following player received entry as a lucky loser:

• Christopher Heyman

Champions

Singles

• Constant Lestienne def. Andrea Arnaboldi 6–2, 6–1.

Doubles

• Gerard Granollers / Lukáš Rosol def. Nikola Ćaćić / Lucas Miedler 7–5, 6–3.