Challenger - Seul 10/09 09:20 14 [453] Jason Jung v Mukund Sasikumar [371] 4-6,3-6
Challenger Gwangju 10/06 02:00 26 [161] Maximilian Marterer v Jason Jung [453] 3-6,7-5,7-5
Challenger Gwangju 10/04 06:15 25 [360] Nicolas Barrientos v Jason Jung [453] 1-6,6-4,6-7
Challenger Gwangju 10/03 03:50 19 [453] Jason Jung v Naoki Tajima [458] 6-0,6-3
Taça Davis 09/18 07:20 5 Jason Jung v Hong Kit Wong Cancelled
Taça Davis 09/17 03:00 1 Jason Jung v Coleman Wong 6-1,4-6,6-7
Challenger - Nonthaburi 08/30 05:05 25 Jason Jung v Sho Shimabukuro Cancelled
Challenger - Nonthaburi 08/22 11:25 25 [433] Jason Jung v Illya Marchenko [308] 6-7,2-6
ATP - Newport 07/10 18:50 14 [265] Jason Jung v Mirza Basic [249] 3-6,4-6
Challenger - Porto 07/04 14:45 25 [217] Antoine Bellier v Jason Jung [265] 6-3,2-6,6-4
Challenger - Málaga 06/29 11:50 26 [149] Constant Lestienne v Jason Jung [265] 6-1,6-3
Challenger - Málaga 06/28 08:30 25 [430] Daniel Cukierman v Jason Jung [265] 2-6,5-7
Wimbledon 06/23 10:00 19 [104] Marc-Andrea Huesler v Jason Jung [263] 7-5,6-4,3-6,3-6,6-2
Wimbledon 06/22 12:35 19 [263] Jason Jung v Illya Marchenko [275] 7-6,6-2
Wimbledon 06/20 11:35 14 [263] Jason Jung v Filip Misolic [210] 6-2,3-6,6-2
Challenger - Ilkley 06/13 10:00 19 [431] Charles Broom v Jason Jung [262] 7-6,6-4
Challenger - Ilkley 06/12 13:30 14 [249] Jason Jung v Matheus P De Almeida [221] 6-4,1-6,7-5
Challenger - Nottingham 06/07 14:20 25 [192] Borna Gojo v Jason Jung [249] 6-2,7-6
Challenger - Nottingham 06/06 13:20 19 Jason Jung v Giles Hussey 6-3,7-6
Challenger - Nottingham 06/05 18:00 14 [255] Jason Jung v Henry Patten [320] 7-5,6-4
Challenger - Surbiton 05/30 10:00 19 [170] Max Purcell v Jason Jung [256] 4-6,6-4,6-4
Challenger - Surbiton 05/29 10:00 14 [58] Aleksandr Nedovyesov v Jason Jung [256] 1-6,3-6
Open de França 05/18 11:55 15 [110] Chun Hsin Tseng v Jason Jung [250] 7-5,6-4
Open de França 05/17 09:30 14 [250] Jason Jung v Zizou Bergs [198] 6-4,7-6
Challenger - Bordéus 05/08 15:15 14 Jason Jung v Calvin Hemery 6-3,3-6,4-6
Challenger - Savannah 04/27 16:00 26 [226] Jason Jung v Alex Rybakov [373] 5-7,4-6
Challenger - Savannah 04/25 17:25 25 [138] Emilio Gomez v Jason Jung [226] Retired
Challenger - Tallahassee 04/19 23:40 25 [95] Tomas Martin Etcheverry v Jason Jung [217] 6-3,6-2
Challenger - Sarasota 04/11 20:25 25 [272] Yosuke Watanuki v Jason Jung [218] 6-2,6-2
Challenger - Phoenix 03/14 22:20 14 [128] Mats Moraing v Jason Jung [223] 6-2,3-6,7-5

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.