# Kacper Żuk

Kacper Żuk (born 21 January 1999) is a former Polish professional tennis player.
Żuk has a career high ATP singles ranking of World No. 162 achieved on 13 September 2021. He also has a career-high ATP doubles ranking of World No. 278, achieved on 9 May 2022.
Żuk has reached ten career singles finals with a record of 11 wins and 3 losses, which includes a 1–2 record in ATP Challenger Tour finals. Additionally, he has reached 21 career doubles finals, with a record of 12 wins and 9 losses all but one occurring at the ITF Futures level.

## Tennis career
### 2020–21: First Challenger title and top 200

Żuk made his ATP debut at the 2020 ATP Cup, where he represented Poland in a singles match, losing to Marin Čilić of team Croatia.
He ended the 2020 season with back-to-back ITF World Tennis Tour titles at Hamburg and Vale do Lobo.
He reached his first Challenger final in March 2021 and in April won his first Challenger title at the 2021 Split Open II in Croatia. As a result, he reached the top 200 on 19 April 2021 and a career-high of No. 162 on 13 September 2021.

### 2022–23: United Cup debut

He played his first match at the 2023 United Cup as the Polish No. 3 male player in the semifinals against Frances Tiafoe and lost in straight sets.

## Grand Slam performance timeline

Key :
| W | F | SF | QF | #R | RR | Q# | P# | DNQ | A | Z# | PO | G | S | B | NMS | NTI | P | NH |
Current through the 2023 US Open qualifying

### Singles

| Tournament | 2021 | 2022 | 2023 | SR | W–L | Win % |
| Australian Open | A | Q1 | A | 0 / 0 | 0–0 | – |
| French Open | Q1 | Q1 | A | 0 / 0 | 0–0 | – |
| Wimbledon | Q2 | Q1 | A | 0 / 0 | 0–0 | – |
| US Open | Q2 | A | A | 0 / 0 | 0–0 | – |
| Win–loss | 0–0 | 0 / 0 | 0–0 | – |

## ATP Challenger and ITF Futures Finals
### Singles: 15 (12 titles, 3 runner-ups)

* Legend (singles)
* ATP Challenger Tour (1–2)
* ITF World Tennis Tour (11–1)
* Finals by surface
* Hard (8–3)
* Clay (3–0)
* Grass (0–0)
* Carpet (1–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Win | 1–0 | Mar 2019 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Pablo Vivero Gonzalez | 7–6$^{(7–2)}$, 6–3 |
| Win | 2–0 | May 2019 | M15 Troisdorf, Germany | World Tennis Tour | Clay | Jeroen Vanneste | 7–5, 6–1 |
| Win | 3–0 | Sep 2019 | M25 Stockholm, Sweden | World Tennis Tour | Hard (i) | Botic van de Zandschulp | 4–6, 6–4, 6–3 |
| Loss | 3–1 | Oct 2019 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Pablo Vivero Gonzalez | 4–6, 6–4, 5–7 |
| Win | 4–1 | Feb 2020 | M25 Barnstaple, Great Britain | World Tennis Tour | Hard (i) | Christopher Heyman | 7–6$^{(7–3)}$, 6–3 |
| Win | 5–1 | Aug 2020 | M25 Poznań, Poland | World Tennis Tour | Clay | Dimitar Kuzmanov | 7–6$^{(8–6)}$, 6–1 |
| Win | 6–1 | Oct 2020 | M25 Hamburg, Germany | World Tennis Tour | Hard (i) | Tseng Chun-hsin | 6–4, 7–6$^{(7–4)}$ |
| Win | 7–1 | Oct 2020 | M25 Vale do Lobo, Portugal | World Tennis Tour | Hard | Nuno Borges | 6–4, 6–3 |
| Loss | 7–2 | Mar 2021 | Saint Petersburg, Russia | Challenger | Hard (i) | Evgenii Tiurnev | 4–6, 2–6 |
| Win | 8–2 | Apr 2021 | Split, Croatia | Challenger | Clay | Mathias Bourgue | 6–4, 6–2 |
| Loss | 8–3 | Mar 2022 | Biel/Bienne, Switzerland | Challenger | Hard (i) | Jurij Rodionov | 6–7$^{(3–7)}$, 4–6 |
| Win | 9–3 | Aug 2022 | M25 Tbilisi, Georgia | World Tennis Tour | Hard | Aleksandre Metreveli | 6–2, 6–4 |
| Win | 10–3 | Sep 2022 | M25 Falun, Sweden | World Tennis Tour | Hard (i) | Karl Friberg | 6–3, 6–3 |
| Win | 11–3 | Nov 2022 | M25 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Alastair Gray | 6–4, 6–4 |
| Win | 12–3 | Mar 2023 | M25 Trimbach, Switzerland | World Tennis Tour | Carpet (i) | Beibit Zhukayev | 6–4, 6–4 |

### Doubles: 21 (12 titles, 10 runner-ups)

* Legend (singles)
* ATP Challenger Tour (0–2)
* ITF World Tennis Tour (12–8)
* Finals by surface
* Hard (5–9)
* Clay (6–1)
* Grass (0–0)
* Carpet (1–0)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Win | 1–0 | Jun 2016 | Poland F3, Sopot | Futures | Clay | Piotr Matuszewski | Andriej Kapaś Adam Majchrowicz | 7–6$^{(7–5)}$, 6–3 |
| Win | 2–0 | Oct 2016 | Egypt F27, Sharm El Sheikh | Futures | Hard | Piotr Matuszewski | Antonio Massara Andrea Vavassori | 6–3, 6–2 |
| Win | 3–0 | Nov 2016 | Egypt F34, Sharm El Sheikh | Futures | Hard | Piotr Matuszewski | Szymon Walków Kamil Gajewski | 3–6, 6–2, [10–7] |
| Loss | 3–1 | Apr 2017 | Egypt F11, Sharm El Sheikh | Futures | Hard | Piotr Matuszewski | Gijs Brouwer Jelle Sels | 5–7, 1–6 |
| Win | 4–1 | Oct 2017 | Egypt F27, Sharm El Sheikh | Futures | Hard | Piotr Matuszewski | Tomas Papik Marek Gengel | 6–2, 6–2 |
| Win | 5–1 | Aug 2018 | Poland F6, Koszalin | Futures | Clay | Jan Zieliński | Pawel Cias Michal Dembek | 6–2, 6–2 |
| Win | 6–1 | Sep 2018 | Netherlands F6, Haren | Futures | Clay | Yann Wojcik | Stephan Gerritsen Maikel Borg | 4–6, 6–4, [10–3] |
| Loss | 6–2 | Oct 2018 | Egypt F21, Sharm El Sheikh | Futures | Hard | Adam Moundir | Marco Brugnerotto David Pérez Sanz | 6–3, 2–6, [7–10] |
| Loss | 6–3 | Nov 2018 | Egypt F28, Sharm El Sheikh | Futures | Hard | Adham Gaber | Jordi Muñoz Abreu David Pérez Sanz | 3–6, 2–6 |
| Loss | 6–4 | Jan 2019 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | David Poljak | Hsu Yu Hsiou Shintaro Imai | 2–6, 0–6 |
| Loss | 6–5 | Mar 2019 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Daniel Michalski | Marat Deviatiarov Jakub Paul | 3–6, 4–6 |
| Loss | 6–6 | Jun 2019 | M15 Tabarka, Tunisia | World Tennis Tour | Clay | Daniel Michalski | Barnaby Smith Toby Martin | 7–5, 1–6, [8–10] |
| Win | 7–6 | Jul 2019 | M15 Wrocław, Poland | World Tennis Tour | Clay | Jan Zieliński | Piotr Galus Jan Galka | 6–4, 6–3 |
| Win | 8–6 | Sep 2019 | M15 Antalya, Turkey | World Tennis Tour | Clay | Jan Zieliński | Adil Kalyanpur Kelsey Stevenson | 3–6, 6–1, [10–8] |
| Loss | 8–7 | Sep 2019 | M25 Stockholm, Sweden | World Tennis Tour | Hard | Jan Zieliński | Filip Bergevi Florian Lakat | 3–6, 6–7$^{(3–7)}$ |
| Win | 9–7 | Nov 2019 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Jan Zieliński | P Vivero Gonzalez Yu Cheng-Yu | 6–3, 6–1 |
| Loss | 9–8 | Nov 2019 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Piotr Matuszewski | Sagadat Ayap Kai Lemstra | 1–6, 6–7$^{(2–7)}$ |
| Win | 10–8 | Jan 2020 | M25 Nussloch, Germany | World Tennis Tour | Carpet | Jan Zieliński | Johannes Härteis Peter Heller | 6–3, 6–4 |
| Win | 11–8 | Feb 2020 | M25 Barnstaple, Great Britain | World Tennis Tour | Hard | Jan Zieliński | Evan Hoyt Luke Johnson | 6–3, 7–6$^{(7–5)}$ |
| Win | 12–8 | Aug 2020 | M25 Poznań, Poland | World Tennis Tour | Clay | Jan Zieliński | Mikolaj Lorens Wojciech Marek | 7–5, 6–2 |
| Loss | 12–9 | Feb 2022 | Pau, France | Challenger | Hard (i) | Karol Drzewiecki | Albano Olivetti David Vega Hernández | w/o |
| Loss | 12–10 | Feb 2023 | Cherbourg, France | Challenger | Hard (i) | Karol Drzewiecki | Ivan Liutarevich Vladyslav Manafov | 6–7$^{(10–12)}$, 6–7$^{(7–9)}$ |