2023 Busan Open – Singles

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

Singles
2023 Busan Open
Champion	Aleksandar Vukic
Runner-up	Max Purcell
Score	6–4, 1–0 ret.

Main article: 2023 Busan Open

Aleksandar Vukic won the title after Max Purcell retired trailing 4–6, 0–1 in the final.

Seeds

1. Max Purcell (final, retired)
2. Christopher Eubanks (quarterfinals)
3. Jordan Thompson (quarterfinals)
4. Emilio Gómez (first round)
5. Rinky Hijikata (second round)
6. Aleksandar Vukic (champion)
7. Kaichi Uchida (first round)
8. Gabriel Diallo (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
	1	Max Purcell	6	7
	8	Gabriel Diallo	4	5
								1	Max Purcell	4	0r
								6	Aleksandar Vukic	6	1
		Brandon Holt	64	1
	6	Aleksandar Vukic	77	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	M Purcell	6	6
	Q	Yuki Mochizuki	3	3				1	M Purcell	6	6
	Q	Renta Tokuda	64	3					Y-h Hsu	2	4
		Y-h Hsu	77	6											1	M Purcell	6	7
	WC	H Chung	3	77	2										Q	Y Uchiyama	4	5
	Q	Y Uchiyama	6	63	6			Q	Y Uchiyama	6	3	6
	Alt	O Jasika	78	3	2			5	R Hijikata	4	6	4
	5	R Hijikata	66	6	6																	1	M Purcell	6	7
	3	J Thompson	6	6																		8	G Diallo	4	5
	Alt	D Masur	1	1				3	J Thompson	7	6
		E Donskoy	7	3	6				E Donskoy	5	3
		Y Shimizu	5	6	0										3	J Thompson	3	5
	WC	Y-s Chung	7	6											8	G Diallo	6	7
		T-l Wu	5	2				WC	Y-s Chung	65	64
	WC	J-s Nam	3	3				8	G Diallo	77	77
	8	G Diallo	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	K Uchida	2	4
		A Çelikbilek	6	6					A Çelikbilek	4	65
		Y Bu	4	4					L Tu	6	77
		L Tu	6	6												L Tu	4	4
		R Berankis	63	3												B Holt	6	6
	Q	L Saville	77	6				Q	L Saville	3	3
		B Holt	6	6					B Holt	6	6
	4	E Gómez	2	2																			B Holt	64	1
	6	A Vukic	77	6																		6	A Vukic	77	6
		L Harris	65	3				6	A Vukic	77	6
		S Shimabukuro	62	6	7				S Shimabukuro	61	4
	Q	H Moriya	77	2	5										6	A Vukic	64	77	6
	Q	J Jung	6	3											2	C Eubanks	77	63	4
		S-c Hong	2	0r				Q	J Jung	4	3
		M Polmans	6	3	66			2	C Eubanks	6	6
	2	C Eubanks	4	6	78