Jong Sung Ko (KOR)
Country: South Korea,
Category: Junior, Boys
Tournaments played in 2025
See detailed tennis results of Jong Sung Ko| Oct 28 | J100B | [Q] | J100 Andong \ Andong International Junior Championships, Andong(KOR) |
| Oct 06 | J300B | [Q] | J300 Wanju \ Hana Securities Wanju International Junior Championship, Wanju(KOR) |
| Jun 10 | J30B | [Q] | J30 Yeongwol \ Yeongwol International Junior Championships, Yeongwol(KOR) |
| Jun 03 | J30B | [Q] | J30 Gimcheon \ Gimcheon International Junior Championships, Gimcheon City(KOR) |
| Apr 29 | J60B | [Q] | J60 Yanggu-Gun, Yanggu(KOR) |
| Apr 08 | J60B | [Q] | J60 Andong \ Andong International Junior Championships, Andong(KOR) |
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