Challenger Bengaluru 02/23 06:30 26 [338] Jason Jung v Luca Nardi [158] 5-7,7-5,2-6
Challenger Bengaluru 02/21 08:40 25 S D Prajwal Dev v Jason Jung 2-6,2-6
Challenger Bengaluru 02/20 05:45 19 [338] Jason Jung v Mukund Sasikumar [399] 7-5,6-4
Challenger Bengaluru 02/19 05:30 14 [343] Jason Jung v Vladyslav Orlov [387] 6-4,7-5
Challenger Chennai 02/16 05:00 26 Sumit Nagal v Jason Jung 3-6,6-2,6-0
Challenger Chennai 02/14 09:20 25 [343] Jason Jung v Harold Mayot [288] 6-3,1-6,7-6
Challenger Chennai 02/13 04:30 19 [331] Jason Jung v Mukund Sasikumar [398] 6-4,4-6,4-6
Challenger Chennai 02/12 05:55 14 [331] Jason Jung v Niki Kaliyanda Poonacha [305] 6-0,6-2
Challenger Nonthaburi 01/15 03:00 14 [396] Jason Jung v Arthur Cazaux [382] 3-6,4-6
Challenger Nonthaburi 01/13 03:30 28 [396] Jason Jung v Lloyd Harris [212] 1-6,4-6
Challenger Nonthaburi 01/12 04:55 27 [396] Jason Jung v Evgeny Donskoy [346] 4-6,7-5,6-3
Challenger Nonthaburi 01/11 03:00 26 [396] Jason Jung v Beibit Zhukayev [313] 6-4,7-6
Challenger Nonthaburi 01/10 04:45 25 [259] Sho Shimabukuro v Jason Jung [396] 4-6,1-6
Challenger Nonthaburi 01/09 05:45 19 [375] Stuart Parker v Jason Jung [382] 3-6,5-7
Challenger Nonthaburi 01/08 09:00 14 [400] Dominik Palan v Jason Jung [382] 4-6,1-6
Challenger Yokkaichi 11/21 01:00 19 Jason Jung v Shuichi Sekiguchi Retired
Challenger Yokkaichi 11/20 02:55 14 [399] Jason Jung v Masamichi Imamura [456] 6-4,6-3
Challenger Kobe 11/17 02:00 26 [289] Ramkumar Ramanathan v Jason Jung [399] Retired
Challenger Kobe 11/15 01:00 25 [399] Jason Jung v Rio Noguchi [205] 3-6,6-4,6-1
Challenger Kobe 11/14 01:00 19 [426] Yuki Mochizuki v Jason Jung [422] 3-6,3-6
Challenger Kobe 11/13 02:20 14 Shuichi Sekiguchi v Jason Jung Cancelled
Challenger Kobe 11/13 02:10 14 Keisuke Saitoh v Jason Jung 6-4,3-6,3-6
Challenger Matsuyama 11/11 03:05 27 [422] Jason Jung v Seong Chan Hong [371] 1-6,4-6
Challenger Matsuyama 11/10 01:00 26 [196] Li Tu v Jason Jung [422] 2-6,2-6
Challenger Matsuyama 11/08 02:30 25 [422] Jason Jung v Yosuke Watanuki [193] 7-5,6-4
Challenger Matsuyama 11/07 03:45 19 [422] Jason Jung v Jisung Nam [482] 6-3,6-4
Challenger Matsuyama 11/06 03:45 14 Jason Jung v Shunsuke Nakagawa 6-1,6-1
Challenger Yokohama 11/03 02:00 26 [331] Sho Shimabukuro v Jason Jung [438] 6-4,6-3
Challenger Yokohama 11/01 01:00 25 [438] Jason Jung v Zdenek Kolar [237] 6-2,6-1
Challenger Busan 10/16 04:10 14 Shinji Hazawa v Jason Jung Cancelled

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.