2023 Heilbronner Neckarcup

The 2023 Heilbronner Neckarcup was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Heilbronn, Germany between 5 and 11 June 2023.^[1]

2023 Heilbronner Neckarcup
Date	5–11 June
Edition	9th
Surface	Clay
Location	Heilbronn, Germany
Champions
Singles
Matteo Arnaldi
Doubles
Constantin Frantzen / Hendrik Jebens

Champions

Singles

Main article: 2023 Heilbronner Neckarcup – Singles

• Matteo Arnaldi def. Facundo Díaz Acosta 7–6^(7–4), 6–1.

Doubles

Main article: 2023 Heilbronner Neckarcup – Doubles

• Constantin Frantzen / Hendrik Jebens def. Victor Vlad Cornea / Philipp Oswald 7–6^(9–7), 6–4.

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
ITA	Marco Cecchinato	72	1
ESP	Jaume Munar	81	2
COL	Daniel Elahi Galán	91	3
AUT	Dominic Thiem	92	4
ITA	Matteo Arnaldi	106	5
HUN	Fábián Marozsán	115	6
GER	Oscar Otte	120	7
	Pavel Kotov	121	8

• ¹ Rankings are as of 29 May 2023.^[2]

Other entrants

The following players received wildcards into the singles main draw:

• Rudolf Molleker
• Dominic Thiem
• Marko Topo

The following players received entry into the singles main draw as alternates:

• Dan Added
• Hernán Casanova
• Cem İlkel

The following players received entry from the qualifying draw:

• Sebastian Fanselow
• Lucas Gerch
• Jérôme Kym
• Max Hans Rehberg
• Akira Santillan
• Henri Squire

The following player received entry as a lucky loser:

• Maxime Janvier