Yusei Kosaka (JPN)
Country: Japan,
Born in 2001 (24 years old),
Category: Junior, Boys
ITF Ranking
-
Career High : 1284
Tournaments played in 2017
See detailed tennis results of Yusei Kosaka| Aug 30 | J60B | [Q] | J60 Miki City \ Hyogo International Junior Tournament 1, Hyogo(JPN) |
| Mar 13 | J60B | 1/16 | Newport Beach ITF, Newport Beach,CA(USA) |
| Feb 20 | J30B | 1/16 | J5 Phnom Penh \ Tennis Cambodia ITF Junior II, Phnom Penh(CAM) |
| Feb 13 | J30B | 1/16 | J5 Phnom Penh \ Tennis Cambodia ITF Junior I, Phnom Penh(CAM) |
| Jan 11 | J60B | 1/16 | J3 Saitama \ ITF Saitama Junior Tennis, Saitama(JPN) |








