Cupa Davis 04/07 04:30 28 Jason Jung v Amirvala Madanchi 6-3,6-3
Challenger - Shenzhen 03/13 05:55 25 Jason Jung v Duckhee Lee 6-4,5-7,4-6
Challenger - Zhuhai 03/10 08:35 28 Jason Jung v Hubert Hurkacz 1-6,7-6,4-6
Challenger - Zhuhai 03/09 06:40 27 Jason Jung v Mats Moraing 6-2,3-6,6-3
Challenger - Zhuhai 03/07 04:00 26 Miomir Kecmanovic v Jason Jung 6-3,6-7,4-6
Challenger - Zhuhai 03/05 08:05 25 Jason Jung v Ze Zhang 6-0,6-3
Challenger - Yokohama 02/28 02:30 26 Tobias Kamke v Jason Jung 6-4,6-2
Challenger - Yokohama 02/27 02:25 25 Yunseong Chung v Jason Jung 2-6,7-6,4-6
Challenger San Francisco 02/12 00:00 29 Dominik Koepfer v Jason Jung 4-6,6-2,6-7
Challenger San Francisco 02/11 03:00 28 Miomir Kecmanovic v Jason Jung 6-7,6-4,2-6
Challenger San Francisco 02/10 06:00 27 Noah Rubin v Jason Jung 3-6,1-6
Challenger San Francisco 02/09 04:20 26 Jason Jung v Mackenzie McDonald 1-6,7-6,6-2
Challenger San Francisco 02/07 00:30 25 Inigo Cervantes v Jason Jung 2-6,0-6
Challenger - Dallas 02/02 21:00 28 Kei Nishikori v Jason Jung 6-4,6-4
Challenger San Francisco 02/01 20:30 27 Miomir Kecmanovic v Jason Jung 1-6,1-6
Challenger - Dallas 01/31 16:30 26 Jared Hiltzik v Jason Jung 6-4,1-6,4-6
Challenger - Dallas 01/29 20:40 25 Jason Jung v Alexander Bublik 6-4,6-4
Challenger Newport Beach Qual 01/20 23:30 45 Jason Jung v Tom Fawcett 6-3,5-7,2-6
Australian Open Qual 01/10 00:50 44 Alexey Vatutin v Jason Jung 6-1,5-7,6-2
Challenger - Bangkok 01/03 04:00 26 Evgeny Karlovskiy v Jason Jung 6-4,6-4
Challenger - Bangkok 01/01 06:40 25 Jason Jung v Jurgen Zopp 6-1,6-2
Challenger Toyota 11/13 02:00 25 [239] Jason Jung v Max Purcell [282] 4-6,6-3,2-6
Challenger - Kobe 11/08 06:50 26 [160] Go Soeda v Jason Jung [239] 6-3,6-4
Challenger - Kobe 11/07 02:00 25 [239] Jason Jung v Omar Jasika [269] 2-6,6-4,6-4
Challenger Shenzhen 2 11/03 02:00 27 [103] Radu Albot v Jason Jung [253] 5-7,6-3,7-5
Challenger Shenzhen 2 11/02 06:00 26 [253] Jason Jung v Akira Santillan [148] 6-2,1-6,6-3
Challenger Shenzhen 2 10/31 02:00 25 [253] Jason Jung v Marinko Matosevic [421] 6-4,7-6
Challenger Ho Chi Minh City 10/27 12:45 27 Jason Jung v Mikhail Youzhny 3-6,2-6
Challenger Ho Chi Minh City 10/26 09:20 26 Hugo Grenier v Jason Jung 6-7,3-6
Challenger Ho Chi Minh City 10/25 03:00 25 Jason Jung v Vasko Mladenov 6-3,6-3

Wikipedia - Jason Jung

Jason Jung (Chinese: 莊吉生; pinyin: Zhuāng Jíshēng; Pe̍h-ōe-jī: Chng Kit-seng; Taiwanese Mandarin: [tswáŋ tɕǐ sə́ŋ]; born 15 June 1989) is an American-born Taiwanese professional tennis player who represents the 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.

History

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 world number 5 Kevin Anderson in the first round, followed by 7th seed Cameron Norrie in the second before upsetting defending champion and 3rd seed Reilly Opelka in the quarterfinals. He was eliminated in the semifinals by Italian veteran Andreas Seppi in straight sets.