Date of Birth: 
About Hong Seong-chan
- Hong Seong-chan (born 30 June 1997 in Gangwondo) is a South Korean tennis player.
- Hong has a career high ATP singles ranking of 343 achieved on 24 October 2016.Hong reached the final of the 2015 Australian Open junior championships, falling to top seed Roman Safiullin in the final.
- Hong has a career high junior ranking of 3. Since 2015, Hong has been a member of the South Korean Davis Cup team.
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