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Seongchan Hong is a 29-year-old South Korean professional competing on the ATP tour. Standing 175 cm, Hong is a right-hander with a two-handed backhand. Hong was born in Gwangwondo.
Our rating model puts Hong at 1521 ELO across 121 rated matches, strongest on hard courts (1575).
<a href="https://atprank.com/player/seongchan-hong"><img src="https://atprank.com/api/card/player/seongchan-hong" alt="Live tennis ranking — atprank.com" width="640" height="180" /></a>Live card — updates automatically. Free to embed with the atprank.com link.
From matches in our dataset (2023–present).
Biggest upset victories — matches Seongchan Hong won as the betting underdog, ranked by pre-match odds.
Karen KhachanovCiti Open - Washington 2024 · 6-2 6-4@5.05def. 
Zsombor PirosTroisdorf Challenger 2023 · 3-6 6-0 6-0@3.42def. 
Jurij RodionovYokohama Challenger 2023 · 7-6(6) 7-6(6)@2.88def. 
Pierre-Hugues HerbertNonthaburi 1 Challenger 2024 · 6-4 2-6 6-3@2.76def. 
Otto VirtanenBusan Challenger 2024 · 6-2 6-2@2.62Seongchan Hong’s wins over the highest-rated opponents, by the opponent’s pre-match ELO (since 2023).
Karen KhachanovCiti Open - Washington 2024 · 6-2 6-4ELO 1719def. 
Yan BaiZhangjiagang Challenger 2024 · 6-2 6-1ELO 1633def. Valentin RoyerCary Challenger 2024 · 6-4 7-6(8)ELO 1628def. Marat Sharipov (RUS)Nonthaburi 1 Challenger 2024 · 3-6 6-3 6-2ELO 1628def. 
Max PurcellSeoul Challenger 2023 · 6-1 6-3ELO 1612Seongchan Hong's most-played opponents. Open any rivalry for the full meeting record and a win-probability prediction.