| Challenger - Nonthaburi | 01/16 04:15 | 25 | [247] Seongchan Hong v Oriol Roca Batalla [210] | 3-6,7-6,6-3 | |
| Challenger - Nonthaburi | 01/15 05:55 | 19 | [247] Seongchan Hong v Salvatore Caruso [289] | 6-2,6-7,6-2 | |
| Challenger - Nonthaburi | 01/14 06:55 | 14 | Seongchan Hong v Siwanat Auytayakul | 7-6,6-1 | |
| Challenger - Nonthaburi | 01/09 03:00 | 25 | [253] Brandon Holt v Seongchan Hong [248] | 6-2,6-2 | |
| Challenger - Nonthaburi | 01/05 04:00 | 28 | [329] Lucas Pouille v Seongchan Hong [273] | 6-3,6-3 | |
| Challenger - Nonthaburi | 01/04 05:15 | 27 | Seongchan Hong v Marat Sharipov | 3-6,6-3,6-2 | |
| Challenger - Nonthaburi | 01/03 04:45 | 26 | [206] Mark Lajal v Seongchan Hong [273] | 6-2,4-6,5-7 | |
| Challenger - Nonthaburi | 01/02 05:55 | 25 | [273] Seongchan Hong v Pierre-Hugues Herbert [237] | 6-4,2-6,6-3 | |
| Challenger - Nonthaburi | 01/01 04:35 | 19 | [273] Seongchan Hong v Hady Habib [301] | 4-6,6-3,6-2 | |
| Challenger - Nonthaburi | 12/31 06:00 | 14 | [273] Seongchan Hong v Nick Hardt [373] | 1-6,6-1,6-3 | |
| Challenger - Yokkaichi | 11/27 03:45 | 25 | [272] Seongchan Hong v Omar Jasika [320] | 7-6,4-6,2-6 | |
| Challenger - Yokohama | 11/22 02:30 | 26 | [297] Yasutaka Uchiyama v Seongchan Hong [274] | 2-6,6-4,6-4 | |
| Challenger - Yokohama | 11/20 06:15 | 25 | [280] Seongchan Hong v Jurij Rodionov [107] | 7-6,7-6 | |
| Challenger - Kobe | 11/15 06:55 | 26 | [155] Sho Shimabukuro v Seongchan Hong [280] | 6-4,7-6 | |
| Challenger - Kobe | 11/13 05:10 | 25 | [319] Omar Jasika v Seongchan Hong [218] | 3-6,1-6 | |
| Challenger - Matsuyama | 11/07 02:45 | 25 | [218] Seongchan Hong v Luca Nardi [143] | 5-7,6-3,6-7 | |
| Challenger - Sydney | 10/30 23:00 | 25 | [422] Rio Noguchi v Seongchan Hong [215] | 6-2,6-2 | |
| Challenger - Playford | 10/27 00:30 | 27 | [223] Seongchan Hong v Rinky Hijikata [70] | 1-6,1-6 | |
| Challenger - Playford | 10/26 02:25 | 26 | [223] Seongchan Hong v Naoki Nakagawa [360] | 6-3,6-3 | |
| Challenger - Playford | 10/24 03:00 | 25 | Seongchan Hong v Jayden Court | 7-6,6-3 | |
| ATP - Shanghai | 10/03 04:30 | 15 | [198] Seongchan Hong v Dane Sweeny [256] | 2-6,1-6 | |
| ATP - Shanghai | 10/02 04:00 | 14 | [198] Seongchan Hong v Ergi Kirkin [328] | 7-5,6-3 | |
| Cupa Davis | 09/17 12:45 | 1 | [75] Bernabe Zapata Miralles v Seongchan Hong [194] | 6-4,7-5 | |
| Cupa Davis | 09/14 13:00 | 1 | [119] Tomas Machac v Seongchan Hong [194] | 7-6,4-6,6-2 | |
| Cupa Davis | 09/12 13:00 | 1 | [52] Dusan Lajovic v Seongchan Hong [194] | 6-4,7-6 | |
| Challenger - Istanbul | 09/04 07:00 | 19 | Seongchan Hong v Yshai Oliel | 4-6,1-6 | |
| Challenger - Istanbul | 09/03 08:35 | 14 | Seongchan Hong v Cengiz Aksu | 6-2,6-4 | |
| US Open | 08/24 14:00 | 15 | [95] Taro Daniel v Seongchan Hong [203] | 6-2,4-6,6-1 | |
| US Open | 08/22 15:00 | 14 | [173] Francesco Passaro v Seongchan Hong [203] | 6-7,4-6 | |
| Challenger - Stanford | 08/14 05:00 | 25 | Alex Michelsen v Seongchan Hong | 4-6,6-2,6-0 |
Wikipedia - Hong Seong-chan
Hong Seong-chan (born 30 June 1997) is a South Korean tennis player. Hong has a career high ATP singles ranking of world No. 172 achieved on 15 April 2024 and a doubles ranking of No. 359 achieved on 16 January 2023. He is the current Korean No. 1 singles player.
Since 2015, Hong has been a member of the South Korean Davis Cup team.
History
Juniors
Hong reached the final of the 2015 Australian Open junior championships, falling to top seed Roman Safiullin in the final.
Hong had a career high junior ranking of No. 3.
2022: Maiden ATP Challenger title
He lifted his maiden trophy at the ATP 2022 Matsuyama Challenger.
2023-2024: Masters debut, Three Challenger finals
He reached the last round of qualifying at the 2023 Rolex Shanghai Masters.
Ranked No. 227, he qualified for the 2024 BNP Paribas Open having entered the qualifying competition as an alternate after Yosuke Watanuki‘s withdrawal, making his Masters debut.