Rei Sakamoto
2024
| Us Open Junior | [3] | Semi |
| J300Collegepark | [1] | 3R |
| Roland Garros Junior | [1] | Quarter |
| Australian Open Junior | [4] | Win |
| J300Traralgon | [4] | Win |
2023
| J500Plantation | [4] | 2R |
| Us Open Junior | 3R | |
| J300Collegepark | [6] | Quarter |
| Wimbledon Junior | [11] | 3R |
| Roland Garros Junior | [12] | 2R |
| Australian Open Junior | [6] | 3R |
2022
Nation
JPN
Age
18 years old (born in 2006)
World Ranking
ATP Ranking　282th
Year-end Junior World Ranking
- Year-end 2024 5th
- Year-end 2023 18th
- Year-end 2022 33th
- Year-end 2021 779th
Rival
Nicolai Budkov Kjaer (2-0)
Atakan Karahan (2-0)
Alexander Razeghi (1-1)
Joao Fonseca (0-2)
Calvin Baierl (2-0)
Match Details
2024 Us Open Junior
| W | 1R | Izan Almazan Valiente | 6-3 6-1 |
| W | 2R | Henry Bernet | 7-6 6-4 |
| W | 3R | Timofei Derepasko | 6-4 6-4 |
| W | QF | Atakan Karahan | 6-3 6-3 |
| L | SF | Rafael Jodar | 3-6 1-6 |
2024 J300Collegepark
| W | 2R | Calvin Baierl | 6-2 |
| L | 3R | Charlie Robertson | 6-3 3-6 6-7 |
2024 Roland Garros Junior
| W | 1R | William Rejchtman Vinciguerra | 6-4 7-6 |
| W | 2R | Luis Guto Miguel | 6-0 6-0 |
| W | 3R | Theo Papamalamis | 6-4 6-4 |
| L | QF | Lorenzo Carboni | 6-4 1-6 4-6 |
2024 Australian Open Junior
| W | 1R | Alexander Vasilev | 7-6 6-3 |
| W | 2R | Lorenzo Angelini | 6-4 6-2 |
| W | 3R | Pavle Marinkov | 4-6 6-0 6-1 |
| W | QF | Cooper Woestendick | 7-5 6-3 |
| W | SF | Nicolai Budkov Kjaer | 6-2 6-4 |
| W | F | Jan Kumstat | 3-6 7-6 7-5 |
2024 J300Traralgon
| W | 1R | Kriish Tyagi | 6-3 3-6 6-1 |
| W | 2R | Atakan Karahan | 6-2 6-3 |
| W | 3R | Tom Sickenberger | 6-1 6-4 |
| W | QF | Alexander Razeghi | 7-6 6-4 |
| W | SF | Mees Rottgering | 7-6 7-6 |
| W | F | Nicolai Budkov Kjaer | 6-4 6-1 |
2023 J500Plantation
| W | 1R | Keaton Hance | 6-3 6-1 |
| L | 2R | Luca Preda | 4-6 3-6 |
2023 Us Open Junior
| W | 1R | Iliyan Radulov | 7-6 6-4 |
| W | 2R | Roy Horovitz | 6-7 7-6 6-4 |
| L | 3R | Yi Zhou | 2-6 4-6 |
2023 J300Collegepark
| W | 2R | Aryan Shah | 6-1 6-0 |
| W | 3R | Stiles Brockett | 6-4 6-2 |
| L | QF | Alexander Razeghi | 1-6 1-6 |
2023 Wimbledon Junior
| W | 1R | Carlo Alberto Caniato | 7-6 6-4 |
| W | 2R | Thijs Boogaard | 7-6 7-6 |
| L | 3R | Joao Fonseca | 3-6 4-6 |
2023 Roland Garros Junior
| W | 1R | Charlie Camus | 6-7 6-1 6-1 |
| L | 2R | Jan Hrazdil | 6-7 4-6 |
2023 Australian Open Junior
| W | 1R | David Fix | 6-3 6-3 |
| W | 2R | Tiago Pires | 4-6 7-6 6-4 |
| L | 3R | Joao Fonseca | 3-6 4-6 |
2022 Us Open Junior
| W | 1R | Calvin Baierl | 6-1 7-6 |
| L | 2R | Gerard Campana Lee | 4-6 6-7 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 5774, Number of registered players: 3,011, Number of registered results: 222,093