Park Ui-sung (; 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 has a career high ITF junior combined ranking of No. 3 achieved on 1 January 2018. Challenger and World Tennis Tour Finals Singles: 1 (0-1) External links 2000 births Living people South Korean male tennis players Tennis players from Seoul 21st-century South Korean people