2025 Zug Open

Country	Player	Rank1	Seed
HUN	Zsombor Piros	166	1
SUI	Marc-Andrea Hüsler	170	2
FRA	Calvin Hemery	171	3
FRA	Harold Mayot	178	4
ITA	Francesco Maestrelli	179	5
ARG	Santiago Rodríguez Taverna	188	6
ARG	Facundo Díaz Acosta	189	7
LBN	Benjamin Hassan	196	8

• ¹ Rankings as of 14 July 2025.^[1]

The following players received wildcards into the singles main draw:

• Henry Bernet
• Mika Brunold
• Kilian Feldbausch

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

• Lukáš Klein

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

• Geoffrey Blancaneaux
• Lorenzo Giustino

The following players received entry from the qualifying draw:

• Rémy Bertola
• Petr Brunclík
• Román Andrés Burruchaga
• Maximilian Neuchrist
• Jakub Paul
• Stefanos Sakellaridis

• Lukáš Klein def. Harold Mayot 6–2, 6–7^(4–7), 6–4.

• Geoffrey Blancaneaux / Harold Mayot vs. Nam Ji-sung / Takeru Yuzuki, not completed.