Tennis. Played Haerteis Johannes. Season 2023

Country

Germany. Ranking ATP 0.

Cassis

03.09.2023	Qualifications - 1st round	Broom Charles — Haerteis Johannes	2:0 (6:3, 7:6)

Porto
01.08.2023	First round	Haerteis Johannes — Nava Emilio	0:2 (6:7, 6:7)
30.07.2023	Qualifications - 1st round	Haerteis Johannes — Lilov Victor	2:1 (6:4, 2:6, 6:2)

Prague II
07.05.2023	Qualifications - 1st round	Sachko Vitaliy — Haerteis Johannes	2:1 (5:7, 6:2, 6:1)

Biel
19.03.2023	Qualifications - 1st round	Forti Francesco — Haerteis Johannes	2:1 (4:6, 6:4, 7:5)

Koblenz
31.01.2023	First round	Vatutin Alexey — Haerteis Johannes	2:0 (7:6, 6:1)
30.01.2023	Qialification final	Haerteis Johannes — Jahn Jeremy	2:0 (6:4, 6:4)
29.01.2023	Qualifications - 1st round	Haerteis Johannes — Arnaboldi Andrea	2:0 (6:4, 6:4)