CF
The basics
Quick facts
Intro
German tennis player
Gender:
Male
Places:
Work field:
Birth:
16 March 1998(Düsseldorf, Düsseldorf Government Region, North Rhine-Westphalia, Germany)
Star sign:
The details
Biography
Introduction
Constantin Frantzen (born 16 March 1998) is a German tennis player who specializes in doubles.
Frantzen has a career high ATP doubles ranking of world No. 63, achieved on 12 February 2024. He has won six ATP Challenger doubles titles, all with partner Hendrik Jebens.
He played college tennis at Baylor University.
Career
2023
Frantzen made his ATP Tour doubles main draw debut at the Swiss Open Gstaad alongside Hendrik Jebens.
He reached his first ATP Tour final at the Moselle Open with partner Jebens, but lost to Hugo Nys and Jan Zieliński.
Doubles performance timeline
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round;(DNQ) did not qualify; (A) absent;(NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.
Current through the 2024 Open 13 Provence.
| Tournament | 2022 | 2023 | 2024 | SR | W–L |
|---|---|---|---|---|---|
| Grand Slam tournaments | |||||
| Australian Open | A | A | 1R | 0 / 1 | 0–1 |
| French Open | A | A | 0 / 0 | 0–0 | |
| Wimbledon | A | A | 0 / 0 | 0–0 | |
| US Open | A | A | 0 / 0 | 0–0 | |
| Win–loss | 0–0 | 0–0 | 0–1 | 0 / 1 | 0–1 |
| Career statistics | |||||
| Tournaments | 0 | 5 | 5 | 10 | |
| Titles | 0 | 0 | 0 | 0 | |
| Finals | 0 | 1 | 0 | 1 | |
| Overall win–loss | 0–0 | 3–5 | 2–5 | 5–10 | |
| Year-end ranking | 186 | 65 | 33% | ||
ATP Tour finals
Doubles: 1 (1 runner-up)
| Finals by surface |
|---|
| Legend |
| Grand Slam tournaments (0–0) |
| ATP Tour Masters 1000 (0–0) |
| ATP Tour 500 Series (0–0) |
| ATP Tour 250 Series (0–1) |
| Finals by surface |
| Hard (0–1) |
| Clay (0–0) |
| Grass (0–0) |
| Grand Slam tournaments (0–0) |
| ATP Tour Masters 1000 (0–0) |
| ATP Tour 500 Series (0–0) |
| ATP Tour 250 Series (0–1) |
| Hard (0–1) |
| Clay (0–0) |
| Grass (0–0) |
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Loss | Nov 2023 | Moselle Open, France |
250 Series | Hard (i) | Hendrik Jebens | Hugo Nys Jan Zieliński |
4–6, 4–6 |
ATP Challenger and ITF World Tennis Tour finals
Doubles: 24 (11–13)
| Finals by surface |
|---|
| Legend |
| ATP Challenger (6–7) |
| ITF Futures/World Tennis Tour (5–6) |
| Finals by surface |
| Hard (3–8) |
| Clay (7–4) |
| Grass (0–0) |
| Carpet (1–1) |
| ATP Challenger (6–7) |
| ITF Futures/World Tennis Tour (5–6) |
| Hard (3–8) |
| Clay (7–4) |
| Grass (0–0) |
| Carpet (1–1) |
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Win | Oct 2015 | Ismaning, Germany |
Futures | Carpet (i) | Alexander Erler | Kevin Krawietz Tim Sandkaulen |
2–6, 7–5, [10–8] | |
| Loss | Oct 2021 | M15 Lubbock, United States |
World Tour | Hard | Sven Lah | Sekou Bangoura Gijs Brouwer |
4–6, 6–4, [5–10] | |
| Loss | Nov 2021 | M25 Harlingen, United States |
World Tour | Hard | Gabi Adrian Boitan | Francis Alcantara Mark Whitehouse |
6–7, 7–5, [7–10] | |
| Loss | Feb 2022 | M25 Glasgow, United Kingdom |
World Tour | Hard (i) | Charles Broom | Gijs Brouwer Aidan McHugh |
6–4, 6–7, [4–10] | |
| Loss | Apr 2022 | M15 Monastir, Tunisia |
World Tour | Hard | Tim Sandkaulen | Szymon Kielan Michał Mikuła |
6–7, 7–6, [2–10] | |
| Win | Apr 2022 | M15 Monastir, Tunisia |
World Tour | Hard | Charles Broom | Li Zhe Bu Yunchaokete |
7–5, 2–6, [10–8] | |
| Win | May 2022 | M15 Meerbusch, Germany |
World Tour | Clay | Tim Sandkaulen | Miguel Fernando Pereira Gabriel Roveri Sidney |
7–6, 6–4 | |
| Win | May 2022 | M25 Most, Czech Republic |
World Tour | Clay | Tim Sandkaulen | Marek Gengel David Poljak |
6–3, 4–6, [10–7] | |
| Loss | Jun 2022 | M25 Arlon, Belgium |
World Tour | Clay | Tim Sandkaulen | Anirudh Chandrasekar Vijay Sundar Prashanth |
6–7, 4–6 | |
| Win | Jul 2022 | M25 Kassel, Germany |
World Tour | Clay | Tim Sandkaulen | Tom Gentzsch Leopold Zima |
6–4, 6–2 | |
| Loss | Aug 2022 | M25 Wetzlar, Germany |
World Tour | Clay | Tim Sandkaulen | Benjamin Hassan Tristan Lamasine |
4–6, 3–6 | |
| Loss | Sep 2022 | Columbus, United States |
Challenger | Hard | Charles Broom | Julian Cash Henry Patten |
2–6, 5–7 | |
| Loss | Oct 2022 | Las Vegas, United States |
Challenger | Hard | Reese Stalder | Julian Cash Henry Patten |
4–6, 6–7 | |
| Loss | Mar 2023 | Pau, France |
Challenger | Hard (i) | Julian Cash | Dan Added Albano Olivetti |
6–3, 1–6, [8–10] | |
| Loss | Mar 2023 | Lugano, Switzerland |
Challenger | Hard (i) | Hendrik Jebens | Zizou Bergs David Pel |
2–6, 6–7 | |
| Win | Mar 2023 | Biel/Bienne, Switzerland |
Challenger | Hard (i) | Hendrik Jebens | Victor Vlad Cornea Franko Škugor |
6–2, 6–4 | |
| Loss | May 2023 | Mauthausen, Austria |
Challenger | Clay | Hendrik Jebens | Romain Arneodo Sam Weissborn |
4–6, 2–6 | |
| Win | Jun 2023 | Heilbronn, Germany |
Challenger | Clay | Hendrik Jebens | Victor Vlad Cornea Philipp Oswald |
7–6, 6–4 | |
| Loss | Jun 2023 | Lyon, France |
Challenger | Clay | Hendrik Jebens | Manuel Guinard Grégoire Jacq |
4–6, 6–2, [7–10] | |
| Win | Aug 2023 | Augsburg, Germany |
Challenger | Clay | Hendrik Jebens | Constantin Kouzmine Volodymyr Uzhylovskyi |
6–2, 6–2 | |
| Win | Sep 2023 | Como, Italy |
Challenger | Clay | Hendrik Jebens | Filip Bergevi Mick Veldheer |
6–3, 6–4 | |
| Win | Sep 2023 | Bad Waltersdorf, Austria |
Challenger | Clay | Hendrik Jebens | Marco Bortolotti Francesco Passaro |
6–1, 6–2 | |
| Win | Oct 2023 | Orléans, France |
Challenger | Hard (i) | Hendrik Jebens | Henry Patten John-Patrick Smith |
7–6, 7–6 | |
| Loss | Nov 2023 | Ismaning, Germany |
Challenger | Carpet (i) | Hendrik Jebens | Sriram Balaji Andre Begemann |
6–7, 4–6 |