2017 Brest Challenger

Country	Player	Rank1	Seed
RUS	Daniil Medvedev	67	1
ROU	Marius Copil	74	2
SVK	Norbert Gombos	83	3
FRA	Jérémy Chardy	84	4
TUN	Malek Jaziri	89	5
SRB	Laslo Đere	90	6
RUS	Andrey Kuznetsov	95	7
ITA	Matteo Berrettini	120	8

• ¹ Rankings are as of 16 October 2017.^[1]

The following players received wildcards into the singles main draw:

• Geoffrey Blancaneaux
• David Guez
• Ugo Humbert
• Corentin Moutet

The following players received entry into the singles main draw as special exempts:

• Matteo Donati
• Stefanos Tsitsipas

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

• Gleb Sakharov

The following players received entry from the qualifying draw:

• Tristan Lamasine
• Illya Marchenko
• Gianni Mina
• Yannik Reuter

The following player received entry as a lucky loser:

• Andrea Arnaboldi

• Corentin Moutet def. Stefanos Tsitsipas 6–2, 7–6^(10–8).

• Sander Arends / Antonio Šančić def. Scott Clayton / Divij Sharan 6–4, 7–5.