Ryotaro Koshiba

2020

2019

J5 CHIGASAKI	[7]	Quarter
JAOSAKA		1R
J4 MIKICITY-2		1R
J4 MIKICITY		1R
J5 PHNOMPENH-2		1R
J4 CAUSEWAYBAY		2R
J4 SHENZHEN-2		2R

2018

J2 NAGOYA		1R
J4 HYOGO-2		2R
J4 HYOGO		1R
J4 JEJU	[4]	2R
J4 CAUSEWAYBAY		2R

2017

J3 PUNE		1R
J2 NAGOYA		2R
J500OSAKA		1R
J4 HYOGO-2		1R
J4 HYOGO		1R
J4 LAUTOKA	[7]	Quarter
J4 JEJU	[9]	3R

Nation

JPN

Age

23 years old (born in 2002)

Year-end Junior World Ranking

Year-end 2020 1139th
Year-end 2019 1500th
Year-end 2018 1024th

Match Details

2020201920182017

J3 SAITAMA

W	1R	Prachaya Baibong	6-1 6-3
L	2R	Reiya Komagata	2-6 2-6

J5 CHIGASAKI

W	1R	Sohma Nakagomi	4-6 7-6 6-4
W	2R	Taiyo Kurata	6-4 2-6 6-4
L	QF	Taiyo Uenoyama	1-6 2-6

J4 CAUSEWAYBAY

W	1R	Guntinun Sootinun-Opart	6-4 6-1
L	2R	Wai Yu Kai	2-6 3-6

J4 SHENZHEN-2

W	1R	Zhipeng Song	6-3 6-2
L	2R	Qian Sun	4-6 0-6

J4 HYOGO-2

W	1R	Fumiya Yoshino	6-4 4-6 6-2
L	2R	Yu Zhang	0-6 2-6

J4 CAUSEWAYBAY

W	1R	Chieh Cheng Yu	6-0 6-4
L	2R	Ching Ho Sunny Yue	3-6 4-6

J2 NAGOYA

W	1R	Akanit Pumjit	6-1 6-3
L	2R	Seita Watanabe	2-6 1-6

J500OSAKA

Stefan Storch

7-5 2-6 3-6

J4 LAUTOKA

W	2R	Chen Dong	7-5 3-6 6-2
W	3R	Kiev Moores	6-1 6-1
L	QF	Hiroki Sakagawa	2-6 0-6

J4 JEJU

W	2R	Joonhyuk Ko	7-5 6-0
L	3R	Joonhee Yoon	1-6 1-6

Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 14549, Number of registered players: 7,577, Number of registered results: 451,713