2023 Croatia Open Umag – Singles

Alexei Popyrin defeated Stan Wawrinka in the final, 6–7^(5–7), 6–3, 6–4 to win the singles tennis title at the 2023 Croatia Open Umag. It was his second ATP Tour singles title.

Singles
2023 Croatia Open Umag
Champion	Alexei Popyrin
Runner-up	Stan Wawrinka
Score	6–7(5–7), 6–3, 6–4
Draw	28 (4 Q / 3 WC )
Seeds	8

Main article: 2023 Croatia Open Umag

Jannik Sinner was the reigning champion, but chose not to defend his title.

Seeds

The top four seeds received a bye into the second round.

1. Jiří Lehečka (quarterfinals)
2. Lorenzo Sonego (semifinals)
3. Sebastian Ofner (second round)
4. Roberto Carballés Baena (quarterfinals)
5. Christopher O'Connell (first round)
6. Stan Wawrinka (final)
7. Matteo Arnaldi (semifinals)
8. Albert Ramos Viñolas (first round)

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
	7	Matteo Arnaldi	77	5	3
		Alexei Popyrin	62	7	6
									Alexei Popyrin	65	6	6
								6	Stan Wawrinka	77	3	4
	6	Stan Wawrinka	6	6
	2	Lorenzo Sonego	3	4

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	J Lehečka	6	7
		D Thiem	6	7					D Thiem	3	5
	Q	F Bagnis	4	5											1	J Lehečka	6	2	4
		M Čilić	4	3											7	M Arnaldi	3	6	6
	Q	F Cobolli	6	6				Q	F Cobolli	3	65
	Q	J de Jong	3	2				7	M Arnaldi	6	77
	7	M Arnaldi	6	6																		7	M Arnaldi	77	5	3
																							A Popyrin	62	7	6
								3	S Ofner	4	1
		A Popyrin	6	7					A Popyrin	6	6
		B Bonzi	4	5												A Popyrin	77	7
	WC	D Ajduković	1	2											WC	D Prižmić	62	5
	WC	D Prižmić	6	6				WC	D Prižmić	6	6
		Z Piros	6	6					Z Piros	2	3
	5	C O'Connell	3	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	S Wawrinka	6	6
	Q	F Misolic	3	2				6	S Wawrinka	7	6
		M-A Hüsler	4	2					F Coria	5	1
		F Coria	6	6											6	S Wawrinka	6	7
		T Daniel	1	7	6										4	R Carballés Baena	4	5
	WC	M Landaluce	6	5	2				T Daniel	3	1
								4	R Carballés Baena	6	6
																						6	S Wawrinka	6	6
	8	A Ramos Viñolas	3	6	3																	2	L Sonego	3	4
		J Munar	6	3	6				J Munar	6	6
		F Marozsán	6	6					F Marozsán	4	3
		JM Cerúndolo	3	2												J Munar	6	1	2
		M Cecchinato	4	77	6										2	L Sonego	3	6	6
		A Shevchenko	6	60	3				M Cecchinato	1	67
								2	L Sonego	6	79

Qualifying

Seeds

1. Alejandro Tabilo (first round)
2. Tomás Barrios Vera (qualifying competition)
3. Andrea Vavassori (first round)
4. Timofey Skatov (qualifying competition)
5. Facundo Bagnis (qualified)
6. Filip Misolic (qualified)
7. Raúl Brancaccio (first round)
8. Luca Nardi (first round)

Qualifiers

1. Filip Misolic
2. Jesper de Jong
3. Flavio Cobolli
4. Facundo Bagnis

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	Alejandro Tabilo	4	6	64
		Damir Džumhur	6	4	77
									Damir Džumhur	4	3
								6	Filip Misolic	6	6
	Alt	Pablo Cuevas	5	2
	6	Filip Misolic	7	6

Second qualifier

	First round							Qualifying competition
	2	Tomás Barrios Vera	6	6
	WC	Nino Serdarušić	4	2
								2	Tomás Barrios Vera	2	4
									Jesper de Jong	6	6
		Jesper de Jong	4	6	6
	7	Raúl Brancaccio	6	2	3

Third qualifier

	First round							Qualifying competition
	3	Andrea Vavassori	2	6	66
		Zdeněk Kolář	6	4	78
									Zdeněk Kolář	4	2
									Flavio Cobolli	6	6
		Flavio Cobolli	6	7
	8	Luca Nardi	1	5

Fourth qualifier

	First round							Qualifying competition
	4	Timofey Skatov	6	6
	WC	Jerko Brkić	2	2
								4	Timofey Skatov	7	4	2
								5	Facundo Bagnis	5	6	6
		Francesco Maestrelli	4	1
	5	Facundo Bagnis	6	6

External links

• Main draw
• Qualifying draw