2023 IBG Prague Open – Singles

Oleksii Krutykh was the defending champion^[1] but chose not to defend his title.

Singles
2023 IBG Prague Open
Champion	Rudolf Molleker
Runner-up	Gabriel Debru
Score	6–2, 6–2

Main article: 2023 IBG Prague Open

Rudolf Molleker won the title after defeating Gabriel Debru 6–2, 6–2 in the final.

Seeds

1. Lukas Neumayer (first round)
2. Francesco Maestrelli (first round)
3. Luciano Darderi (quarterfinals)
4. Rudolf Molleker (champion)
5. João Sousa (semifinals)
6. Henri Squire (first round)
7. Mathias Bourgue (first round)
8. Valentin Vacherot (semifinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	Q	Gabriel Debru	5	6	6
	5	João Sousa	7	3	4
								Q	Gabriel Debru	2	2
								4	Rudolf Molleker	6	6
	4	Rudolf Molleker	6	77
	8	Valentin Vacherot	4	65

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	L Neumayer	6	3	4
	Q	G Debru	2	6	6			Q	G Debru	7	6
	WC	H Bartoň	6	3	2			Q	J Nicod	5	1
	Q	Jakub Nicod	1	6	6										Q	G Debru	77	63	6
		C Hemery	4	6	2										WC	T Kodat	64	77	4
	WC	T Kodat	6	1	6			WC	T Kodat	6	6
		H Laaksonen	4	77	6				H Laaksonen	3	3
	7	M Bourgue	6	63	2																	Q	G Debru	5	6	6
	3	L Darderi	6	67	77																	5	J Sousa	7	3	4
		M Janvier	3	79	65			3	L Darderi	6	6
	Q	M Vrbenský	6	7				Q	M Vrbenský	4	1
		D Jordà Sanchis	3	5											3	L Darderi	5	6	63
	WC	J Forejtek	6	3	6										5	J Sousa	7	3	77
		J Barranco Cosano	4	6	4			WC	J Forejtek	0	6	4
		V Royer	4	1				5	J Sousa	6	4	6
	5	J Sousa	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	H Squire	6	4	3
	Q	FA Gómez	4	6	6			Q	FA Gómez	6	6
		L Giustino	6	6					L Giustino	3	3
		FC Jianu	4	3											Q	FA Gómez	3	3
		M Gengel	2	2											4	R Molleker	6	6
		M Chazal	6	6					M Chazal	2	2
		L Rosol	3	4				4	R Molleker	6	6
	4	R Molleker	6	6																		4	R Molleker	6	77
	8	V Vacherot	6	6																		8	V Vacherot	4	65
	Q	Kirill Kivattsev	4	4				8	V Vacherot	6	6
		F Mena	7	6					F Mena	2	4
	PR	Carlos López Montagud	5	3											8	V Vacherot	77	6
		A Paulson	6	6												A Paulson	65	2
	Q	Paweł Ciaś	4	4					A Paulson	6	6
		Mathys Erhard	77	5	6				M Erhard	3	3
	2	F Maestrelli	60	7	3