Noritaka Koizumi
2020
| J5 MATSUYAMA-2 | [1] | 2R |
| J5 YAMANASHI-2 | [1] | Final |
| J1 NONTHABURI | 2R | |
| J3 AUCKLAND | 1R | |
| J4 CHRISTCHURCH | [9] | Final |
| J3 SAITAMA | 1R |
2019
| J5 YAMANASHI | [2] | 2R |
| J4 MAKATICITY-2 | 1R | |
| J4 MAKATICITY | 2R | |
| J2 NAGOYA | 1R | |
| JAOSAKA | 1R | |
| J4 MIKICITY-2 | [7] | 1R |
| J4 MIKICITY | 1R | |
| J5 LAUTOKA | [3] | Quarter |
| J4 LAUTOKA | [6] | 2R |
| J3 SAITAMA | 1R |
2018
Nation
JPN
Age
22 years old (born in 2003)
World Ranking
ATP Ranking　1701th
Year-end Junior World Ranking
- Year-end 2020 287th
- Year-end 2019 759th
- Year-end 2018 1069th
Match Details
J5 MATSUYAMA-2
| W | 1R | Shion Motoyama | 6-2 6-3 |
| L | 2R | Hayato Matsuoka | 6-2 1-6 2-6 |
J5 YAMANASHI-2
| W | 1R | Satoru Nakajima | 7-5 6-2 |
| W | 2R | Roshu Fujioka | 6-2 6-1 |
| W | QF | Yua Taka | 6-1 6-3 |
| W | SF | Yuma Daijima | 7-5 6-2 |
| L | F | Lennon Roark Jones | 3-6 6-2 6-7 |
J1 NONTHABURI
| W | 1R | Tarm Rojanasoonthon | 6-2 6-4 |
| L | 2R | Chen Dong | 2-6 3-6 |
J3 AUCKLAND
| L | 1R | Anton Shepp | 1-6 2-6 |
J4 CHRISTCHURCH
| W | 1R | Zachary Viiala | 6-2 6-4 |
| W | 2R | Taj Hibbert | 6-1 6-1 |
| W | 3R | Clement Mainguy | 6-4 6-2 |
| W | QF | Darcy Nicholls | 7-5 3-6 6-0 |
| W | SF | Patrick Joss | 6-7 6-3 6-2 |
| L | F | Enzo Aguiard | 4-6 0-6 |
J3 SAITAMA
| L | 1R | Hikaru Takeda | 6-7 6-3 3-6 |
J5 YAMANASHI
| W | 1R | Sohma Nakagomi | 6-4 6-2 |
| L | 2R | Lennon Roark Jones | 1-6 3-6 |
J4 MAKATICITY-2
| L | 1R | Yu Shiang Huang | 3-6 4-6 |
J4 MAKATICITY
| W | 1R | Taentawan Taddeo Majoli Maggioli | 6-2 6-2 |
| L | 2R | Yan Cheng Chen | 3-6 4-6 |
J2 NAGOYA
| L | 1R | Stefan Popovic | 3-6 5-7 |
JAOSAKA
| L | 1R | Leandro Riedi | 2-6 1-6 |
J4 MIKICITY-2
| L | 1R | Jiang Yunhan | 3-6 1-6 |
J4 MIKICITY
| L | 1R | Jiang Yunhan | 2-6 6-7 |
J5 LAUTOKA
| W | 2R | James Mcpherson | 6-1 6-1 |
| W | 3R | Hayato Kurihara | 6-3 6-1 |
| L | QF | Timmy Karpinski | 6-4 2-6 1-6 |
J4 LAUTOKA
| L | 2R | Jiaxi Ma | 0-6 2-6 |
J3 SAITAMA
| L | 1R | Tomoya Fujiwara | 3-6 1-6 |
J2 NAGOYA
| L | 1R | Ryuhei Azuma | 2-6 1-6 |
J4 HYOGO
| W | 1R | Taisei Kageyama | 2-6 6-3 6-4 |
| W | 2R | Shunsuke Mitsui | 6-3 5-7 7-5 |
| L | QF | Taiyo Yamanaka | 1-6 3-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 14379, Number of registered players: 7,503, Number of registered results: 447,330