Germany
16.03.98, 27 years
275300 $
16.03.98, 27 years
275300 $
Country
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Czech Republic
15.01.03, 22 years
27556 $
15.01.03, 22 years
27556 $
Constantin Frantzen vs. Daniel Siniakov - head to head matches
| 04.07.22 | q 1 | Constantin Frantzen | Daniel Siniakov | 6-4, 6-3 | match details |  M25 Marburg | Clay |
Constantin Frantzen form & Daniel Siniakov form
Constantin Frantzen - last matches
| Augsburg Challenger - Clay | ||||
| 20.08.23 q 1 | vs. Daniel Masur | 3-6, 4-6 |  | match details |
 Drummondville Challenger - I. hard | ||||
| 15.11.22 1st round | vs. Roko Horvat | 6-73, 1-6 | | match details |
| 14.11.22 qual. | vs. Roy Smith | 6-76, 6-76 | | match details |
| 13.11.22 q 1 | vs. Omni Kumar | 2-6, 7-5, 7-5 |  | match details |
 M25 Harlingen - Hard | ||||
| 18.10.22 qual. | vs. Drew Van Orderlain | 3-6, 4-6 | | match details |
| 17.10.22 q 1 | vs. Grant Lothringer | 6-4, 6-4 | | match details |
| Columbus 2 - I. hard | ||||
| 18.09.22 q 1 | vs. James Kent Trotter | 0-6, 2-6 | | match details |
| M25 Marburg - Clay | ||||
| 07.07.22 2nd round | vs. Milan Welte | 6-3, 5-7, 1-6 | | match details |
| 06.07.22 1st round | vs. Taym Alazmeh | 7-69, 6-1 | | match details |
| 05.07.22 qual. | vs. Milan Welte | 6-4, 3-6, 10-5 | | match details |
| 04.07.22 q 1 | vs. Daniel Siniakov | 6-4, 6-3 | | match details |
 M25 Arlon - Clay | ||||
| 22.06.22 1st round | vs. Alexander Hoogmartens | 4-6, 1-6 | | match details |
| 21.06.22 qual. | vs. Tim Sandkaulen | 1-6, 6-4, 10-8 | | match details |
| 20.06.22 q 1 | vs. Victor Ernaelsteen | 6-3, 6-2 | | match details |
| M15 Meerbusch - Clay | ||||
| 02.05.22 q 2 | vs. Marco De Rossi | 3-6, 2-6 | | match details |
| 01.05.22 q 1 | vs. Mihailo Kecojevic | 6-3, 6-3 | | match details |
 M25 Split - Clay | ||||
| 25.04.22 q 2 | vs. Drazen Petrovic | 4-6, 5-7 | | match details |
| 24.04.22 q 1 | vs. Roko Stipetic | 7-5, 6-2 | | match details |
 M15 Monastir - Hard | ||||
| 06.04.22 1st round | vs. Szymon Kielan | 3-6, 5-7 | | match details |
| 04.04.22 q 2 | vs. Matthew Stubbings | 6-1, 6-2 | | match details |
| 04.04.22 qual. | vs. Jakub Katuch | 6-3, 6-0 | | match details |
| M15 Monastir - Hard | ||||
| 27.03.22 q 1 | vs. Pol Wattanakul | 6-71, 7-5, 8-10 | | match details |
| M15 Monastir - Hard | ||||
| 23.03.22 q 2 | vs. Louis Herman | 2-6, 1-6 | | match details |
| 20.03.22 q 1 | vs. Alexandre Aubriot | 6-3, 6-3 | | match details |
 M25 Trimbach - Carpet | ||||
| 17.03.22 2nd round | vs. Johannes Haerteis | 3-6, 7-62, 2-6 | | match details |
| 16.03.22 1st round | vs. Leonardo Taddia | 6-4, 7-5 | | match details |
| 15.03.22 qual. | vs. Laurin Aerne | 3-6, 7-61, 12-10 | | match details |
| 14.03.22 q 1 | vs. Jasin Jakupi | 6-3, 6-3 | | match details |
 M25 Glasgow - I. hard | ||||
| 17.02.22 2nd round | vs. Anton Matusevich | 4-6, 2-6 | | match details |
| 15.02.22 1st round | vs. Felix Gill | 6-75, 6-4, 6-0 | | match details |
Daniel Siniakov - last matches
 Ostrava Challenger - Clay | ||||
| 28.04.25 qual. | vs. Jelle Sels | 4-6, 2-6 | | match details |
| 27.04.25 q 1 | vs. Enrico Dalla Valle | 7-64, 7-61 | | match details |
 M25 Heraklion - Hard | ||||
| 04.11.24 q 2 | vs. Stylianos Christodoulou | 6-2, 4-6, 8-10 | | match details |
| 03.11.24 q 1 | vs. Vincent Jonah Strauch | 6-1, 6-2 | | match details |
| M25 Heraklion - Hard | ||||
| 30.10.24 1st round | vs. Mario Gonzalez Fernandez | 2-6, 6-3, 3-6 | | match details |
| 29.10.24 qual. | vs. Eyal Shyovitz | 6-3, 6-3 | | match details |
| 28.10.24 q 2 | vs. Emilien Demanet | 4-6, 7-66, 10-8 | | match details |
| 27.10.24 q 1 | vs. Michalis Sakellaridis | 6-4, 6-1 | | match details |
 M25 Trnava - I. hard | ||||
| 24.10.24 2nd round | vs. Remy Bertola | 3-6, 0-6 | | match details |
| 23.10.24 1st round | vs. Illya Beloborodko | 6-3, 6-4 | | match details |
| 22.10.24 qual. | vs. Jan Kupcic | 4-6, 6-4, 10-6 | | match details |
| 21.10.24 q 1 | vs. Ilie Babinciuc | 6-2, 6-1 | | match details |
 M15 Grodzisk - I. hard | ||||
| 02.10.24 1st round | vs. Michael Agwi | 2-6, 2-6 | | match details |
| 01.10.24 qual. | vs. Theo Herrmann | 7-5, 6-1 | | match details |
| 30.09.24 q 2 | vs. Fabio Nestola | 6-1, 6-2 | | match details |
| M15 Pardubice - Clay | ||||
| 19.09.24 2nd round | vs. Maxim Mrva | 3-6, 3-6 | | match details |
| 18.09.24 1st round | vs. Dominik Recek | 6-3, 6-1 | | match details |
| M25 Kassel - Clay | ||||
| 12.07.24 1/4 | vs. Gauthier Onclin | 4-6, 6-3, 4-6 | | match details |
| 11.07.24 2nd round | vs. Tim Handel | 7-5, 4-6, 6-4 | | match details |
| 10.07.24 1st round | vs. Aaron Gil Garcia | 6-0, 6-3 | | match details |
| 09.07.24 qual. | vs. Moritz Hoffmann | 6-3, 6-0 | | match details |
| 08.07.24 q 1 | vs. Martin Benes | 6-1, 6-76, 10-4 | | match details |
| Prostejov Challenger - Clay | ||||
| 02.06.24 q 1 | vs. Bogdan Bobrov | 2-6, 4-6 | | match details |
| M25 Trnava - I. hard | ||||
| 26.03.24 qual. | vs. Piotr Grynkowski | 4-6, 2-6 | | match details |
| 25.03.24 q 1 | vs. Xavier Jakubovic | 6-1, 6-4 | | match details |
| M25 Pardubice - Clay | ||||
| 20.09.23 1st round | vs. Maxim Mrva | 6-4, 2-6, 5-7 | | match details |
| M25 Jablonec - Clay | ||||
| 01.09.23 1/4 | vs. Hynek Barton | 6-70, 6-71 | | match details |
| 31.08.23 2nd round | vs. Adam Jurajda | 7-63, 7-5 | | match details |
| 30.08.23 1st round | vs. Andrew Paulson | 5-7, 7-66, 6-4 | | match details |
| Prague 3 - Clay | ||||
| 20.08.23 q 1 | vs. Jaime Faria | 1-6, 4-6 | | match details |
