Seong-chan Hong

Seong-chan Hong is a South Korean professional tennis player born on 30 June 1997. The 29-year-old ATP competitor played four matches across three tournaments in the 2026 season according to Tennis Post's match data, winning one. Hong competed in the Grand Slam US Open in August, where he lost in qualifying with a record of 1–1, and in two ATP Masters 1000 events: Cincinnati in August and Shanghai in October, where he lost in qualifying at both tournaments.