Jumpei Yamasaki
2015
2014
| J500OSAKA | [2] | Semi |
| US OPEN JUNIOR | [11] | 1R |
| WIMBLEDON JUNIOR | [15] | 1R |
| ROLAND GARROS JUNIOR | [13] | 2R |
| AUSTRALIAN OPEN JUNIOR | [14] | 2R |
2013
| J500OSAKA | [14] | Final |
2012
| J500OSAKA | 2R |
2011
| J500OSAKA | 3R |
Nation
JPN
Age
28 years old (born in 1997)
World Ranking
ATP Ranking　870th
Match Details
US OPEN JUNIOR
| W | 1R | Marcelo Tomas Barrios Vera | 2-6 6-4 6-3 |
| L | 2R | Alex De Minaur | 1-6 6-7 |
WIMBLEDON JUNIOR
| L | 1R | Casper Ruud | 6-7 7-6 3-6 |
ROLAND GARROS JUNIOR
| L | 1R | Tommy Paul | 2-6 6-7 |
AUSTRALIAN OPEN JUNIOR
| L | 1R | Soonwoo Kwon | 3-6 6-7 |
J500OSAKA
| W | 1R | Haru Inoue | 6-4 6-3 |
| W | 2R | Daniel Bennett | 4-6 6-1 6-2 |
| W | 3R | Masaya Kobayashi | 7-5 7-6 |
| W | QF | Bjorn Thomson | WO |
| L | SF | Yunseong Chung | 4-6 2-6 |
US OPEN JUNIOR
| L | 1R | Lucas Miedler | 7-6 6-4 |
WIMBLEDON JUNIOR
| L | 1R | Tim Van Rijthoven | 1-6 2-6 |
ROLAND GARROS JUNIOR
| W | 1R | Bogdan Bobrov | 6-3 6-4 |
| L | 2R | Seong Chan Hong | 2-6 6-2 0-6 |
AUSTRALIAN OPEN JUNIOR
| W | 1R | Gabriel Vellinho Hocevar | 6-1 6-3 |
| L | 2R | Boris Pokotilov | 4-6 6-4 6-8 |
J500OSAKA
| W | 1R | Tom Hill | 6-7 7-6 6-2 |
| L | 2R | Borna Coric | 1-6 1-6 |
J500OSAKA
| W | 1R | Kaito Uesugi | 4-6 7-5 6-1 |
| W | 2R | Tom Hill | 7-5 6-1 |
| L | 3R | Soichiro Moritani | 6-7 4-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 10505, Number of registered players: 6,666, Number of registered results: 385,227