| Challenger Cancun |
08/11 20:00 |
14 |
Constantin Frantzen v
Luis Carlos Alvarez Valdes
|
2-6,2-6
|
|
| Challenger Augsburg |
08/20 14:10 |
14 |
[416] Daniel Masur
v
Constantin Frantzen [98] |
6-3,6-4
|
|
| Challenger Drummondville |
11/15 20:45 |
25 |
Roko Horvat
v
Constantin Frantzen |
7-6,6-1
|
|
| Challenger Drummondville |
11/14 15:00 |
19 |
Constantin Frantzen v
Roy Smith
|
6-7,6-7
|
|
| Challenger Drummondville |
11/13 16:35 |
14 |
[474] Omni Kumar
v
Constantin Frantzen [207] |
6-2,5-7,5-7
|
|
| ITF M25 Harlingen |
10/18 23:30 |
19 |
Constantin Frantzen v
Drew Van Orderlain
|
3-6,4-6
|
|
| Challenger Columbus |
09/18 16:00 |
14 |
[283] Constantin Frantzen v
James Trotter
[404] 
|
0-6,2-6
|
|
| ITF M25 Marburg |
07/07 10:15 |
26 |
Constantin Frantzen v
Milan Welte
|
6-3,5-7,1-6
|
|
| ITF M25 Marburg |
07/06 10:40 |
25 |
Taym Al Azmeh
v
Constantin Frantzen |
6-7,1-6
|
|
| ITF M25 Marburg |
07/05 09:45 |
54 |
Milan Welte
v
Constantin Frantzen |
4-6,6-3,5-10
|
|
| ITF M25 Marburg |
07/04 11:30 |
54 |
Constantin Frantzen v
Laura Lopez Giese
|
6-4,6-3
|
|
| ITF M25 Arlon |
06/22 08:00 |
25 |
Constantin Frantzen v
Alexander Hoogmartens
|
4-6,1-6
|
|
| ITF M25 Arlon |
06/21 08:00 |
54 |
[447] Tim Sandkaulen
v
Constantin Frantzen [423] |
6-1,4-6,8-10
|
|
| ITF M25 Arlon |
06/20 10:40 |
54 |
Victor Ernaelsteen
v
Constantin Frantzen |
3-6,2-6
|
|
| ITF M15 Meerbusch |
05/02 08:00 |
62 |
Constantin Frantzen v
Marco De Rossi
|
3-6,2-6
|
|
| ITF M15 Meerbusch |
05/01 07:30 |
62 |
Constantin Frantzen v
Mihailo Kecojevic
|
6-3,6-3
|
|
| ITF M25 Split |
04/25 10:20 |
62 |
Oranut Sricharoen Liger
v
Constantin Frantzen |
6-4,7-5
|
|
| ITF M15 Monastir |
04/06 12:35 |
25 |
Constantin Frantzen v
Szymon Kielan
|
3-6,5-7
|
|
| ITF M25 Monastir |
04/04 13:30 |
62 |
Constantin Frantzen v
Jakub Katuch
|
6-3,6-0
|
|
| ITF M25 Monastir |
04/04 09:00 |
62 |
Constantin Frantzen v
Matthew Stubbings
|
6-1,6-2
|
|
| ITF M25 Monastir |
03/27 10:00 |
62 |
Constantin Frantzen v
Pol Wattanakul
|
6-7,7-5,8-10
|
|
| ITF M25 Monastir |
03/23 07:30 |
62 |
Louis Herman
v
Constantin Frantzen |
6-2,6-1
|
|
| ITF M25 Monastir |
03/20 09:00 |
62 |
Constantin Frantzen v
Alexandre Aubriot
|
6-3,6-3
|
|
| ITF M25 Trimbach |
03/17 09:00 |
26 |
Johannes Haerteis
v
Constantin Frantzen |
6-3,6-7,6-2
|
|
| ITF M25 Trimbach |
03/16 13:55 |
25 |
Constantin Frantzen v
Leonardo Taddia
|
6-4,7-5
|
|
| ITF M25 Trimbach |
03/15 09:00 |
54 |
Constantin Frantzen v
Laurin Aerne
|
3-6,7-6,12-10
|
|
| ITF M25 Trimbach |
03/14 09:00 |
54 |
Constantin Frantzen v
Jasin Jakupi
|
6-3,6-3
|
|
| ITF M25 Glasgow |
02/17 10:00 |
26 |
Anton Matusevich
v
Constantin Frantzen |
6-4,6-2
|
|
| ITF M25 Glasgow |
02/15 10:00 |
25 |
Felix Gill
v
Constantin Frantzen |
7-6,4-6,0-6
|
|
| ITF M25 Glasgow |
02/14 09:55 |
54 |
Osgar O'Hoisin
v
Constantin Frantzen |
3-6,2-6
|
|