11‑Sep‑2023 | M15 Buschhausen | Clay | QF | 1008 | 739 | (7)Jonas Forejtek [CZE] d. (WC)Majdandzic | 6-4 6-2 | | | | | | | | | |
11‑Sep‑2023 | M15 Buschhausen | Clay | R16 | 1008 | 722 | (WC)Majdandzic d. (4)Tom Gentzsch [GER] | 3-6 6-4 6-4 | | | | | | | | | |
11‑Sep‑2023 | M15 Buschhausen | Clay | R32 | 1008 | 1359 | (WC)Majdandzic d. (Q)Tommaso Carnevale Miino [ITA] | 6-3 6-3 | | | | | | | | | |
28‑Aug‑2023 | M15 Allershausen | Clay | R16 | 1067 | | (Q)Jannik Maute [GER] d. Majdandzic | 6-4 6-0 | | | | | | | | | |
28‑Aug‑2023 | M15 Allershausen | Clay | R32 | 1067 | 1451 | Majdandzic d. Niklas Waldner [AUT] | 6-3 6-4 | | | | | | | | | |
21‑Aug‑2023 | M15 Huy | Clay | R16 | 1064 | 867 | (7)Jarno Jans [NED] d. (JR)Majdandzic | 7-5 6-2 | | | | | | | | | |
21‑Aug‑2023 | M15 Huy | Clay | R32 | 1064 | | (JR)Majdandzic d. (Q)Jim Hendrikx [NED] | 7-5 7-5 | | | | | | | | | |
14‑Aug‑2023 | M15 Targu Jiu | Clay | R32 | 1674 | 736 | (7)Simon Anthony Ivanov [BUL] d. (JR)Majdandzic | 6-1 6-2 | | | | | | | | | |
7‑Aug‑2023 | M15 Eupen | Clay | F | 1671 | 678 | (8)Marlon Vankan [GER] d. (JR)Majdandzic | 7-5 7-6(3) | | | | | | | | | |
7‑Aug‑2023 | M15 Eupen | Clay | SF | 1671 | 536 | (JR)Majdandzic d. (3)Peter Heller [GER] | 7-5 6-1 | | | | | | | | | |
7‑Aug‑2023 | M15 Eupen | Clay | QF | 1671 | 642 | (JR)Majdandzic d. (7)Luca Wiedenmann [GER] | 6-4 5-7 6-3 | | | | | | | | | |
7‑Aug‑2023 | M15 Eupen | Clay | R16 | 1671 | | (JR)Majdandzic d. (WC)Pierre Yves Bailly [BEL] | 3-6 6-4 6-1 | | | | | | | | | |
7‑Aug‑2023 | M15 Eupen | Clay | R32 | 1671 | 535 | (JR)Majdandzic d. (2)Jose Pereira [BRA] | 4-6 6-1 7-6(4) | | | | | | | | | |
10‑Jul‑2023 | Braunschweig CH | Clay | Q1 | | 324 | (7)Denis Yevseyev [KAZ] d. (WC)Majdandzic | 6-3 6-4 | | 0.70 | 1.4% | 11.3% | 63.4% | 60.0% | 50.0% | 10/13 | |
26‑Jun‑2023 | M15 Kamen | Clay | R16 | | 713 | (8)Tom Gentzsch [GER] d. Majdandzic | 6-3 4-6 7-6(2) | | | | | | | | | |
26‑Jun‑2023 | M15 Kamen | Clay | R32 | | 977 | Majdandzic d. Kody Pearson [AUS] | 6-4 6-3 | | | | | | | | | |