2023 Croatia Open Umag

Alexei Popyrin defeated Stan Wawrinka, 6–7^(5–7), 6–3, 6–4

• It was Popyrin's only singles title of the year and the 2nd of his career.

Blaž Rola / Nino Serdarušić defeated Simone Bolelli / Andrea Vavassori, 4–6, 7–6^(7–2), [15–13]

Event	W	F	SF	QF	Round of 16	Round of 32	Q	Q2	Q1
Singles	250	150	90	45	20	0	12	6	0
Doubles					0	—	—	—	—

Event	W	F	SF	QF	Round of 16	Round of 32	Q2	Q1
Singles	€85,605	€49,940	€29,355	€17,010	€9,880	€6,035	€3,020	€1,645
Doubles*	€29,740	€15,910	€9,330	€5,220	€3,070	—	—	—

_{*per team}

Country	Player	Rank1	Seed
CZE	Jiří Lehečka	33	1
ITA	Lorenzo Sonego	42	2
AUT	Sebastian Ofner	58	3
ESP	Roberto Carballés Baena	60	4
AUS	Christopher O'Connell	67	5
SUI	Stan Wawrinka	74	6
ITA	Matteo Arnaldi	75	7
ESP	Albert Ramos Viñolas	79	8

• ¹ Rankings are as of 17 July 2023.^[2]

The following players received wildcards into the main draw:

• Duje Ajduković
• Martín Landaluce
• Dino Prižmić

The following players received entry from the qualifying draw:

• Facundo Bagnis
• Flavio Cobolli
• Jesper de Jong
• Filip Misolic

• Holger Rune → replaced by Juan Manuel Cerúndolo