2023 Kobe Challenger – Singles

Yosuke Watanuki was the defending champion but chose not to defend his title.

Singles
2023 Kobe Challenger
Champion	Duje Ajduković
Runner-up	Sho Shimabukuro
Score	6–4, 6–2

Main article: 2023 Kobe Challenger

Duje Ajduković won the title after defeating Sho Shimabukuro 6–4, 6–2 in the final.

Seeds

1. Jurij Rodionov (quarterfinals)
2. Shintaro Mochizuki (quarterfinals)
3. Luca Nardi (semifinals)
4. Benjamin Hassan (second round)
5. Sho Shimabukuro (final)
6. Marc Polmans (quarterfinals)
7. Bu Yunchaokete (withdrew)
8. Zdeněk Kolář (first round)

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
• SR = Special ranking

Finals

	Semifinals							Final
		Duje Ajduković	7	5	6
		Wu Tung-lin	5	7	3
									Duje Ajduković	6	6
								5	Sho Shimabukuro	4	2
	3	Luca Nardi	2	2
	5	Sho Shimabukuro	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Rodionov	77	6
	Q	Y Uchiyama	65	4				1	J Rodionov	6	2	6
	WC	T Ito	66	3					Y Shimizu	1	6	1
		Y Shimizu	78	6											1	J Rodionov	65	6	1
		D Ajduković	6	6												D Ajduković	77	4	6
		M Efstathiou	2	2					D Ajduković	6	5	6
		Y-h Hsu	4	3				LL	R Noguchi	0	7	3
	LL	R Noguchi	6	6																			D Ajduković	7	5	6
	4	B Hassan	0	6	6																		T-l Wu	5	7	3
		J McCabe	6	3	2			4	B Hassan	3	4
		D Sweeny	3	62					T-l Wu	6	6
		T-l Wu	6	77												T-l Wu	6	6
	WC	Renta Tokuda	6	1	2											J Jung	4	3
	Q	Y-s Chung	4	6	6			Q	Y-s Chung	77	3	1r
		J Jung	6	77					J Jung	62	6	4
	8	Z Kolář	4	64

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	M Polmans	6	7
	Q	Andrew Fenty	2	5				6	M Polmans	6	77
		A Martin	4	4					G Blancaneaux	4	63
		G Blancaneaux	6	6											6	M Polmans	2	4
	Q	A Holmgren	6	6											3	L Nardi	6	6
		M Echargui	4	3				Q	A Holmgren	3	6	5
	WC	T Ichikawa	5	2				3	L Nardi	6	3	7
	3	L Nardi	7	6																		3	L Nardi	2	2
	5	S Shimabukuro	6	77																		5	S Shimabukuro	6	6
		K Uchida	1	65				5	S Shimabukuro	6	77
	Alt	O Jasika	3	1					S-c Hong	4	64
		S-c Hong	6	6											5	S Shimabukuro	6	6
	Q	K Ivanovski	1	0r											2	S Mochizuki	3	3
	LL	Y Bai	6	4				LL	Y Bai	3	2
	Q	G Fonio	6	2	3			2	S Mochizuki	6	6
	2	S Mochizuki	4	6	6

External links

• Main draw
• Qualifying draw