# Jason Jung

Jason Jung (Chinese: 莊吉生; pinyin: Zhuāng Jíshēng; Pe̍h-ōe-jī: Chng Kit-seng; Taiwanese Mandarin:; born 15 June 1989) is an American-born Taiwanese inactive professional tennis player representing team Chinese Taipei. He has a career high ATP singles ranking of world No. 114 achieved on 30 July 2018 and has won four ATP Challenger titles. Jung has attended the University of Michigan.

## Personal life

Jung played college tennis at the University of Michigan, where he majored in political science. As a tennis player, he was the National and Midwest Regional winner of the ITA/Arthur Ashe Award for Leadership & Sportsmanship in 2010, made the All Big Ten team as a junior and senior, and is 4th all-time in Michigan history in career doubles wins.
He blogs about his experiences and his life as a professional tennis player. He was featured in an article by ESPN's Grantland (along with fellow Michigan alum Evan King and up-and-coming players Frances Tiafoe and William Blumberg) that highlighted the struggles and low prize money in playing on the ITF Futures Tour.

## Career

Jung's reached his first quarterfinal at the 2018 Hall of Fame Tennis Championships in Newport, Rhode Island. He defeated veteran Nicolas Mahut in the second round, but his run was ended by Tim Smyczek, who outlasted Jung 6–1, 5–7, 6–4 in a nearly two-hour, 185-point quarterfinal match.
His career-best result is a semifinal berth at the 2020 New York Open, where he defeated former champion and former world No. 5 Kevin Anderson in the first round, followed by seventh seed Cameron Norrie in the second, before upsetting defending champion and third seed Reilly Opelka in the quarterfinals. He was eliminated in the semifinals by Italian veteran Andreas Seppi in straight sets.

## ATP Challenger and ITF Tour finals
### Singles: 19 (8–11)

* Legend (singles)
* ATP Challenger Tour (4–5)
* ITF Futures/World Tennis Tour (4–6)
* Titles by surface
* Hard (8–10)
* Clay (0–1)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Win | 1–0 | Jul 2012 | USA F21, Godfrey | Futures | Hard | César Ramírez | 2–6, 7–5, 6–2 |
| Loss | 1–1 | May 2013 | China F4, Fuzhou | Futures | Hard | Bai Yan | 3–6, 2–4 ret. |
| Win | 2–1 | Aug 2013 | USA F22, Edwardsville | Futures | Hard | Dimitar Kutrovsky | 6–2, 7–6$^{(7–5)}$ |
| Loss | 2–2 | Sep 2013 | Canada F7, Toronto | Futures | Clay | Peter Polansky | 1–6, 1–6 |
| Loss | 2–3 | Mar 2014 | USA F9, Calabasas | Futures | Hard | Marcos Giron | 4–6, 6–4, 4–6 |
| Loss | 2–4 | Nov 2014 | Thailand F10, Bangkok | Futures | Hard | Danai Udomchoke | 3–6, 4–6 |
| Loss | 2–5 | Jan 2015 | USA F2, Los Angeles | Futures | Hard | Mitchell Krueger | 1–6, 2–6 |
| Win | 3–5 | Apr 2015 | USA F13, Little Rock | Futures | Hard | Darian King | 6–3, 4–6, 6–4 |
| Loss | 3–6 | Apr 2015 | Guadalajara, Mexico | Challenger | Hard | Rajeev Ram | 1–6, 2–6 |
| Loss | 3–7 | Jun 2016 | Canada F3, Richmond | Futures | Hard | Peter Polansky | 1–6, 4–6 |
| Win | 4–7 | Aug 2016 | Chengdu, China, P.R. | Challenger | Hard | Rubén Ramírez Hidalgo | 6–4, 6–2 |
| Loss | 4–8 | Sep 2016 | Shanghai, China, P.R. | Challenger | Hard | Henri Laaksonen | 3–6, 3–6 |
| Win | 5–8 | Sep 2017 | Zhangjiagang, China, P.R. | Challenger | Hard | Zhang Ze | 6–4, 2–6, 6–4 |
| Win | 6–8 | Feb 2018 | San Francisco, USA | Challenger | Hard (i) | Dominik Koepfer | 6–4, 2–6, 7–6$^{(7–5)}$ |
| Loss | 6–9 | Jul 2018 | Winnetka, USA | Challenger | Hard | Evgeny Karlovskiy | 3–6, 2–6 |
| Loss | 6–10 | Sep 2018 | Zhangjiagang, China, P.R. | Challenger | Hard | Yasutaka Uchiyama | 2–6, 2–6 |
| Win | 7–10 | May 2019 | Gwangju, Korea, Rep. | Challenger | Hard | Dudi Sela | 6–4, 6–2 |
| Loss | 7–11 | Aug 2019 | Vancouver, Canada | Challenger | Hard | Ričardas Berankis | 3–6, 7–5, 4–6 |
| Win | 8–11 | Jun 2023 | M25 Jakarta, Indonesia | World Tour | Hard | Dominik Palán | 6–2, 6–2 |

### Doubles: 12 (9–3)

* Legend (doubles)
* ATP Challenger Tour (2–2)
* ITF Futures Tour (7–1)
* Titles by surface
* Hard (7–2)
* Clay (2–1)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Win | 1–0 | Aug 2012 | Canada F5, Mississauga | Futures | Hard | Evan King | Kamil Pajkowski Milan Pokrajac | 6–4, 6–2 |
| Win | 2–0 | Nov 2012 | USA F31, Niceville | Futures | Clay | Ryan Thacher | Artem Sitak Andrei Vasilevski | 7–5, 6–2 |
| Win | 3–0 | Dec 2012 | Hong Kong F1, Hong Kong | Futures | Hard | Ryan Thacher | Victor Baluda Evgeny Karlovskiy | 6–1, 6–1 |
| Win | 4–0 | May 2013 | Korea F1, Seoul | Futures | Hard | Daniel Nguyen | Chung Hong Noh Sang-woo | 7–5, 6–1 |
| Win | 5–0 | Sep 2013 | Canada F8, Toronto | Futures | Hard | Evan King | Milan Pokrajac Peter Polansky | 7–5, 6–2 |
| Win | 6–0 | Jan 2014 | USA F2, Sunrise | Futures | Clay | Evan King | William Blumberg Frances Tiafoe | 6–7$^{(4–7)}$, 6–4, [10–6] |
| Loss | 6–1 | Jan 2014 | USA F3, Weston | Futures | Clay | Evan King | Markus Eriksson Milos Sekulic | 7–6$^{(7–5)}$, 6–7$^{(4–7)}$, [15–17] |
| Loss | 6–2 | Jun 2014 | Tianjin, China, P.R. | Challenger | Hard | Evan King | Robin Kern Josselin Ouanna | 7–6$^{(7–3)}$, 5–7, [8–10] |
| Win | 7–2 | Jan 2016 | Maui, USA | Challenger | Hard | Dennis Novikov | Alex Bolt Frank Moser | 6–3, 4–6, [10–8] |
| Win | 8–2 | May 2016 | Bangkok, Thailand | Challenger | Hard | Chen Ti | Dean O'Brien Ruan Roelofse | 6–4, 3–6, [10–8] |
| Win | 9–2 | Jul 2016 | Canada F4, Kelowna | Futures | Hard | John Paul Fruttero | Jarryd Chaplin Ben McLachlan | 6–4, 7–6$^{(7–4)}$ |
| Loss | 9–3 | Oct 2021 | Las Vegas, USA | Challenger | Hard | Evan King | William Blumberg Max Schnur | 5–7, 7–6$^{(7–5)}$, [5–10] |

## Performance timeline

Key :
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |

### Singles

| Tournament | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | SR | W–L | Win % |
| Grand Slam tournaments ||||||||||||||
| Australian Open | A | A | A | A | Q1 | Q2 | Q2 | A | Q1 | | 0 / 0 | 0–0 | – |
| French Open | A | Q2 | A | Q1 | Q1 | A | 1R | Q1 | Q2 | | 0 / 1 | 0–1 | 0% |
| Wimbledon | A | Q1 | A | Q1 | 1R | Q1 | NH | Q3 | Q3 | | 0 / 1 | 0–1 | 0% |
| US Open | A | Q1 | A | A | A | Q2 | 1R | Q2 | | | 0 / 1 | 0–1 | 0% |
| Win–loss | 0–0 | 0–0 | 0–0 | 0–0 | 0–1 | 0–0 | 0–2 | 0–0 | 0–0 | | 0 / 3 | 0–3 | 0% |
| ATP Tour Masters 1000 ||||||||||||||
| Indian Wells Masters | A | Q1 | Q2 | A | A | Q1 | NH | Q1 | A | A | 0 / 0 | 0–0 | – |
| Miami Open | A | A | A | A | A | Q1 | NH | Q2 | A | A | 0 / 0 | 0–0 | – |
| Monte-Carlo Masters | A | A | A | A | A | A | NH | A | A | A | 0 / 0 | 0–0 | – |
| Madrid Open | A | A | A | A | A | A | NH | A | A | A | 0 / 0 | 0–0 | – |
| Italian Open | A | A | A | A | A | A | A | A | A | A | 0 / 0 | 0–0 | – |
| Canadian Open | Q1 | A | A | A | A | A | NH | A | A | A | 0 / 0 | 0–0 | – |
| Cincinnati Masters | A | A | A | A | A | A | A | A | A | A | 0 / 0 | 0–0 | – |
| Shanghai Masters | A | A | A | A | A | A | NH | NH | NH | Q1 | 0 / 0 | 0–0 | – |
| Paris Masters | A | A | A | A | A | A | Q1 | A | A | A | 0 / 0 | 0–0 | – |
| Win–loss | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0–0 | 0 / 0 | 0–0 | 0% |
| Year-end ranking | | | | | | | | | | 800 | $1,152,926 | $1,152,926 | $1,152,926 |