| Challenger Lexington | 08/02 17:30 | 26 | [333] Bernard Tomic v Seong Chan Hong [209] | 1-6,2-6 | |
| Challenger Lexington | 07/31 20:00 | 25 | [320] Nam Hoang Ly v Seong Chan Hong [209] | 1-6,5-7 | |
| Wimbledon | 06/26 10:00 | 14 | [115] Yosuke Watanuki v Seong Chan Hong [197] | 7-6,7-6 | |
| Challenger Ilkley | 06/17 10:00 | 14 | [160] Dennis Novak v Seong Chan Hong [190] | 6-4,3-6,6-3 | |
| Challenger Nottingham | 06/13 10:00 | 25 | [190] Seong Chan Hong v Bu Yunchaokete [165] | 6-7,2-6 | |
| Challenger Surbiton | 06/04 10:00 | 14 | [184] Seong Chan Hong v Jay Clarke [432] | 3-6,3-6 | |
| Challenger Troisdorf | 05/31 11:00 | 26 | [261] Renzo Olivo v Seong Chan Hong [184] | 6-3,3-6,6-4 | |
| Challenger Troisdorf | 05/29 15:30 | 25 | [184] Seong Chan Hong v Zsombor Piros [125] | 3-6,6-0,6-0 | |
| French Open | 05/22 08:00 | 14 | [184] Seong-Chen Hong v Matteo Gigante [204] | 5-7,4-6 | |
| Challenger Busan | 05/09 03:30 | 25 | [319] Jason Jung v Seong Chan Hong [184] | Retired | |
| Challenger Seoul | 04/28 02:00 | 27 | [194] Seong Chan Hong v Bu Yunchaokete [242] | 4-6,4-6 | |
| Challenger Seoul | 04/27 02:00 | 26 | [89] Max Purcell v Seong Chan Hong [194] | 1-6,3-6 | |
| Challenger Seoul | 04/26 04:55 | 25 | Seong Chan Hong v Tatsuma Ito | 6-3,6-2 | |
| Challenger Tallahassee | 04/22 16:00 | 28 | [156] Zizou Bergs v Seong Chan Hong [200] | 6-2,6-1 | |
| Challenger Tallahassee | 04/21 15:00 | 27 | [326] Moez Echargui v Seong Chan Hong [200] | 4-6,6-2,1-6 | |
| Challenger Tallahassee | 04/19 18:15 | 26 | [200] Seong Chan Hong v Rio Noguchi [204] | 6-1,6-4 | |
| Challenger Tallahassee | 04/17 20:00 | 25 | [472] Christian Harrison v Seong Chan Hong [200] | 3-6,1-6 | |
| Challenger Sarasota | 04/13 17:05 | 26 | [70] Jason Kubler v Seong Chan Hong [209] | 6-3,6-4 | |
| Challenger Sarasota | 04/12 18:30 | 25 | [209] Seong Chan Hong v Zachary Svajda [226] | 6-0,6-0 | |
| ATP Houston | 04/01 21:10 | 14 | [207] Seong Chan Hong v Facundo D Acosta [163] | 2-6,3-6 | |
| Challenger Mexico City | 03/27 22:45 | 25 | [162] Alejandro Tabilo v Seong Chan Hong [207] | 7-5,6-3 | |
| Challenger Puerto Vallarta | 03/08 00:20 | 25 | [327] Ulises Blanch v Seong Chan Hong [207] | 6-3,6-3 | |
| Challenger Waco | 03/03 17:00 | 27 | [214] Seong-Chen Hong v Alexandre Muller [146] | 7-6,6-7,2-6 | |
| Challenger Waco | 03/01 16:30 | 26 | [214] Seong-Chen Hong v Nicolas Mejia [247] | 7-5,6-1 | |
| Challenger Waco | 02/28 16:00 | 25 | [150] Mattia Bellucci v Seong-Chen Hong [214] | 4-6,1-6 | |
| Challenger Rome GA | 02/25 17:10 | 28 | [235] Seong Chan Hong v Alex Michelsen [466] | 6-4,5-7,1-6 | |
| Challenger Rome GA | 02/24 16:00 | 27 | Seong Chan Hong v Toby Alex Kodat | 4-6,6-3,6-4 | |
| Challenger Rome GA | 02/23 16:00 | 26 | [235] Seong Chan Hong v Gabriel Decamps [363] | 6-1,6-0 | |
| Challenger Rome GA | 02/21 18:10 | 25 | Seong Chan Hong v Gabriele T Brancatelli | 6-1,6-3 | |
| Challenger Chennai | 02/15 06:45 | 26 | [229] Arthur Cazaux v Seong Chan Hong [245] | 6-3,6-4 |
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.