Park Ui-sung (Korean: 박의성; born 27 September 2000) is a South Korean tennis player. He has a career-high ranking of No. 635 achieved on 12 September 2022.

Park Ui-sung
박의성
Country (sports) South Korea
Born (2000-09-27) 27 September 2000 (age 24)
Seoul, South Korea
PlaysRight-handed (two-handed backhand)
Prize money$21,555
Singles
Career record0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles0
Highest ranking635 (12 September 2022)
Current ranking640 (19 September 2022)
Grand Slam singles results
Australian Open Junior1R (2018)
French Open Junior2R (2017)
Wimbledon Junior1R (2017)
US Open Junior3R (2017)
Doubles
Career record0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles0
Highest ranking781 (21 March 2022)
Current ranking850 (19 September 2022)
Grand Slam doubles results
French Open Junior2R (2017)
Wimbledon Junior2R (2017)
US Open Junior1R (2017)
Last updated on: 19 September 2022.
Park Ui-sung
Hangul
박의성
Revised RomanizationBak Uiseong
McCune–ReischauerPak Ŭisŏng

Park has a career high ITF junior combined ranking of No. 3 achieved on 1 January 2018.

Challenger and World Tennis Tour Finals

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Singles: 3 (2-1)

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Legend (singles)
ATP Challenger Tour (0-0)
ITF World Tennis Tour (2-1)
Titles by surface
Hard (2–1)
Clay (0-0)
Grass (0–0)
Carpet (0–0)
Result W–L    Date    Tournament Tier Surface Opponent Score
Loss 0–1 Mar 2022 M15 Sharm El Sheikh, Egypt World Tennis Tour Hard   Saba Purtseladze 4-6, 4-6
Win 1–1 Sep 2022 M15 Daegu, South Korea World Tennis Tour Hard   Kim Cheong-Eui 6-3, 6-4
Win 2–1 Jun 2023 M25 Daegu, South Korea World Tennis Tour Hard   Lee Jea-moon 6-3, 7-5

Doubles: 9 (3–6)

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Legend (singles)
ATP Challenger Tour (0–0)
ITF World Tennis Tour (3–6)
Titles by surface
Hard (3–3)
Clay (0–3)
Grass (0–0)
Carpet (0–0)
Result W–L    Date    Tournament Tier Surface Partner Opponents Score
Loss 0–1 Dec 2018 Turkey F38, Antalya Futures Clay   Jeong Yeong-Seok   Wilson Leite
  Jeroen Vanneste
2-6, 2-6
Loss 0–2 May 2019 M15 Cairo, Egypt World Tennis Tour Clay   Jeong Yeong-Seok   Alexander Igoshin
  Bernardo Saraiva
6-4, 2-6, [4–10]
Loss 0–3 Jun 2019 M15 Anseong, South Korea World Tennis Tour Clay   Jeong Yeong-Seok   Haru Inoue
  Ryota Tanuma
(W/O)
Win 1–3 Jun 2021 M15 Monastir, Tunisia World Tennis Tour Hard   Siddhant Banthia   Jeremy Beale
  Ajeet Rai
(W/O)
Loss 1–4 Nov 2021 M15 Heraklion, Greece World Tennis Tour Hard   Harry Wendelken   Filip Bergevi
  Kai Wehnelt
6–7(8–10), 6–4, [7–10]
Loss 1–5 Mar 2022 M15 Sharm El Sheikh, Egypt World Tennis Tour Hard   Sergey Fomin   Jiri Barnat
  Filip Duda
3–6, 2–6
Loss 1–6 Jun 2022 M15 Tay Ninh, Vietnam World Tennis Tour Hard   Son Ji Hoon   Francis Casey Alcantara
  Lý Hoàng Nam
3–6, 1–6
Win 2–6 Nov 2022 M25 Sharm El Sheikh, Egypt World Tennis Tour Hard   Jeong Yeong-Seok   Jacopo Berrettini
  Francesco Forti
6–1, 7–6(11–9)
Win 3–6 Jun 2023 M25 Daegu, South Korea World Tennis Tour Hard   Jeong Yeong-Seok   Cho Seung Woo
  Kim Dong Ju
2–6, 6–0, [10–5]
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