2026 Ostra Group Open

Country	Player	Rank1	Seed
CZE	Dalibor Svrčina	127	1
GBR	Jack Pinnington Jones	135	2
HUN	Zsombor Piros	148	3
GBR	Toby Samuel	163	4
FRA	Ugo Blanchet	166	5
CZE	Zdeněk Kolář	182	6
ITA	Marco Cecchinato	188	7
UKR	Vitaliy Sachko	191	8

• ¹ Rankings are as of 20 April 2026.^[1]

The following players received wildcards into the singles main draw:

• Hynek Bartoň
• Jan Jermář
• Maxim Mrva

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

• Max Schönhaus

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

• Filip Cristian Jianu
• Daniel Michalski
• Nikolás Sánchez Izquierdo

The following players received entry from the qualifying draw:

• Jonáš Forejtek
• Norbert Gombos
• Garrett Johns
• Rudolf Molleker
• Carlos Sánchez Jover
• Daniel Siniakov

• vs.

• Sergio Martos Gornés / Szymon Walków vs. Karol Drzewiecki / Piotr Matuszewski