2019 Slovak Open

Country	Player	Rank1	Seed
KAZ	Mikhail Kukushkin	67	1
HUN	Márton Fucsovics	69	2
ITA	Stefano Travaglia	88	3
POL	Kamil Majchrzak	90	4
BIH	Damir Džumhur	91	5
AUS	Alexei Popyrin	95	6
ITA	Salvatore Caruso	96	7
RSA	Lloyd Harris	103	8
BLR	Egor Gerasimov	104	9
FRA	Antoine Hoang	107	10
SVK	Norbert Gombos	109	11
GER	Yannick Maden	116	12
GER	Peter Gojowczyk	118	13
CZE	Jiří Veselý	119	14
ITA	Gianluca Mager	120	15
SWE	Elias Ymer	123	16

• ¹ Rankings are as of 28 October 2019.^[1]

The following players received wildcards into the singles main draw:

• Andrej Glváč
• Lukáš Klein
• Lukáš Lacko
• Alex Molčan
• Máté Valkusz

The following player received entry into the singles main draw as an alternate:

• Sasikumar Mukund

The following players received entry from the qualifying draw:

• Zdeněk Kolář
• Illya Marchenko

• Dennis Novak def. Damir Džumhur 6–1, 6–1.

• Frederik Nielsen / Tim Pütz def. Roman Jebavý / Igor Zelenay 4–6, 7–6^(7–4), [11–9].