2025 Kozerki Open

Country	Player	Rank1	Seed
POL	Kamil Majchrzak	81	1
CRO	Dino Prižmić	127	2
FRA	Harold Mayot	157	3
FRA	Kyrian Jacquet	163	4
SUI	Marc-Andrea Hüsler	174	5
ITA	Francesco Maestrelli	178	6
FRA	Calvin Hemery	181	7
FRA	Hugo Grenier	192	8

• ¹ Rankings were as of 28 July 2025.^[1]

The following players received wildcards into the singles main draw:

• Tomasz Berkieta
• Maks Kaśnikowski
• Olaf Pieczkowski

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

• Ilya Ivashka

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

• Alexandr Binda

The following player received entry into the singles main draw through the Next Gen Accelerator programme:

• Petr Brunclík

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

• Cui Jie
• Giulio Zeppieri

The following players received entry from the qualifying draw:

• Radu Albot
• Daniil Glinka
• Rafael Jódar
• Maximus Jones
• Filip Pieczonka
• Abdullah Shelbayh

• Kamil Majchrzak def. Dino Prižmić 6–4, 6–3.

• Thijmen Loof / Arthur Reymond def. Nam Ji-sung / Takeru Yuzuki 6–4, 6–7^(3–7), [16–14].