2020 Sibiu Open

Country	Player	Rank1	Seed
FRA	Arthur Rinderknech	163	1
FRA	Quentin Halys	200	2
SUI	Marc-Andrea Hüsler	218	3
ARG	Francisco Cerúndolo	237	4
RUS	Evgeny Karlovskiy	254	5
ESP	Adrián Menéndez Maceiras	262	6
TUN	Malek Jaziri	264	7
JPN	Shuichi Sekiguchi	274	8

• ¹ Rankings are as of 14 September 2020.^[1]

The following players received wildcards into the singles main draw:

• Victor Vlad Cornea
• Dragoș Dima
• Nicholas David Ionel

The following player received entry into the singles main draw using a protected ranking:

• Íñigo Cervantes

The following player received entry into the singles main draw as an alternate:

• Felipe Meligeni Alves

The following players received entry from the qualifying draw:

• Elmar Ejupovic
• Carlos Gómez-Herrera
• Ergi Kırkın
• Matthieu Perchicot

• Marc-Andrea Hüsler def. Tomás Martín Etcheverry 7–5, 6–0.

• Hunter Reese / Jan Zieliński def. Robert Galloway / Hans Hach Verdugo 6–4, 6–2.