2020 Prosperita Open – Singles

Kamil Majchrzak was the defending champion[1] but chose not to defend his title.

Singles
2020 Prosperita Open
Champion	Aslan Karatsev
Runner-up	Oscar Otte
Final score	6–4, 6–2

Aslan Karatsev won the title after defeating Oscar Otte 6–4, 6–2 in the final.

Seeds

1. Henri Laaksonen (Second round)
2. Ilya Ivashka (Quarterfinals)
3. Chung Hyeon (First round)
4. Ernests Gulbis (Second round)
5. Martin Kližan (First round)
6. Arthur Rinderknech (Withdrew)
7. Steven Diez (Second round)
8. Sergiy Stakhovsky (Second round, retired)

Draw

Key

• Q = Qualifier
• WC = Wild Card
• LL = Lucky Loser
• Alt = Alternate
• SE = Special Exempt
• PR = Protected Ranking
• ITF = ITF entry
• JE = Junior Exempt
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
		Botic van de Zandschulp	3	3
	SE	Aslan Karatsev	6	6
								SE	Aslan Karatsev	6	6
									Oscar Otte	4	2
		Oscar Otte	6	6
	SE	Tallon Griekspoor	2	4

Top half

	First Round							Second Round							Quarterfinals							Semifinals
	1	H Laaksonen	7	6
		B Schnur	5	1				1	H Laaksonen	3	2
	WC	O Virtanen	5	4					B van de Zandschulp	6	6
		B van de Zandschulp	7	6												B van de Zandschulp	5	6	6
		L Lacko	7^8	6												L Lacko	7	3	1
		F Horanský	6^6	2					L Lacko	6	7
		F Ferreira Silva	7^7	6					F Ferreira Silva	4	5
	5	M Kližan	6^4	2																			B van de Zandschulp	3	3
	4	E Gulbis	6	6																		SE	A Karatsev	6	6
	WC	D Svrčina	4	1				4	E Gulbis	1	4
	SE	A Karatsev	6	6				SE	A Karatsev	6	6
	WC	T Macháč	4	4											SE	A Karatsev	6	6
	Q	M Moraing	7	6											Q	M Moraing	3	3
		R Olivo	5	0				Q	M Moraing	6	6^4	4
		P Polansky	6	4	3			8	S Stakhovsky	1	7^7	0^r
	8	S Stakhovsky	4	6	6

Bottom half

	First Round							Second Round							Quarterfinals							Semifinals
	LL	M Jaziri	3	5
	Q	Z Kolář	6	7				Q	Z Kolář	5	6	7
		R Safiullin	3	6	3				D Popko	7	4	5
		D Popko	6	1	6										Q	Z Kolář	1	1
		A Vukic	6	4	3											O Otte	6	6
		O Otte	3	6	6				O Otte	6	6
		L Rosol	2	6	6				L Rosol	2	0
	3	Hy Chung	6	4	0																		O Otte	6	6
	7	S Diez	6	6																		SE	T Griekspoor	2	4
		R Molleker	1	2				7	S Diez	6	2	4
	SE	T Griekspoor	4	6	7^7			SE	T Griekspoor	4	6	6
		R Haase	6	4	6^3										SE	T Griekspoor	7^7	6
	Q	M-A Hüsler	6	4	5										2	I Ivashka	6^3	3
		V Troicki	3	6	7				V Troicki	3	5
	Q	Vít Kopřiva	4	6^4				2	I Ivashka	6	7
	2	I Ivashka	6	7^7

References

1. "Majchrzak Cruises Past Sinner To Clinch Ostrava Challenger Title". May 5, 2019.

• Main Draw
• Qualifying Draw