2021 I.ČLTK Prague Open

The 2021 I.ČLTK Prague Open was a professional tennis tournament played on outdoor clay courts. It was the 28th (men) and 16th (women) editions of the tournament which was part of the 2021 ATP Challenger Tour and the 2021 ITF Women's World Tennis Tour. It took place in Prague, Czech Republic from 3 to 9 May 2021.

2021 I.ČLTK Prague Open
Date	3–9 May 2021
Edition	28th (men) 16th (women)
Prize money	€44,820 (men) $25,000 (women)
Surface	Clay
Location	Prague, Czech Republic
Champions
Men's singles
Tallon Griekspoor
Women's singles
Jule Niemeier
Men's doubles
Marc Polmans / Sergiy Stakhovsky
Women's doubles
Anna Bondár / Kimberley Zimmermann

Men's singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
SVK	Norbert Gombos	95	1
JPN	Yūichi Sugita	109	2
SVK	Andrej Martin	110	3
AUT	Dennis Novak	111	4
USA	Denis Kudla	117	5
POL	Kamil Majchrzak	123	6
GER	Peter Gojowczyk	132	7
IND	Sumit Nagal	137	8

• ¹ Rankings are as of 26 April 2021.^[1]

Other entrants

The following players received wildcards into the singles main draw:

• Jiří Lehečka
• Andrew Paulson
• Michael Vrbenský

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

• Renzo Olivo

The following players received entry from the qualifying draw:

• Zdeněk Kolář
• Vít Kopřiva
• Sergiy Stakhovsky
• Kacper Żuk

Women's singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
SVK	Viktória Kužmová	106	1
ROU	Jaqueline Cristian	147	2
AUT	Barbara Haas	156	3
ROU	Elena-Gabriela Ruse	175	4
TUR	Çağla Büyükakçay	177	5
NED	Lesley Pattinama Kerkhove	179	6
SVK	Rebecca Šramková	196	7
AUT	Julia Grabher	197	8

• ¹ Rankings are as of 26 April 2021.

Other entrants

The following players received wildcards into the singles main draw:

• Nikola Bartůňková
• Ana Konjuh
• Linda Nosková
• Darja Viďmanová

The following player received entry using a protected ranking:

• Karman Thandi

The following players received entry from the qualifying draw:

• Anna Bondár
• Amanda Carreras
• Johana Marková
• Jule Niemeier
• Paula Ormaechea
• İpek Öz
• Chantal Škamlová
• Shalimar Talbi

Champions

Men's singles

Main article: 2021 I.ČLTK Prague Open – Men's singles

• Tallon Griekspoor def. Oscar Otte 5–7, 6–4, 6–4.

Women's singles

• Jule Niemeier def. Dalma Gálfi, 6–4, 6–2

Men's doubles

Main article: 2021 I.ČLTK Prague Open – Men's doubles

• Marc Polmans / Sergiy Stakhovsky def. Ivan Sabanov / Matej Sabanov 6–3, 6–4.

Women's doubles

• Anna Bondár / Kimberley Zimmermann def. Xenia Knoll / Elena-Gabriela Ruse, 7–6^(7–5), 6–2