Yosuke Watanuki
2016
| Us Open Junior | [7] | Semi |
| Wimbledon Junior | [6] | 3R |
| Roland Garros Junior | [4] | 1R |
| Australian Open Junior | [13] | Quarter |
2015
Age
27 years old (born in 1998)
World Ranking
ATP Ranking　159th
Match Details
2016 Us Open Junior
| W | 1R | Trent Bryde | 6-2 6-3 |
| W | 2R | Liam Caruana | 6-2 6-4 |
| W | 3R | Sebastian Korda | 6-7 6-2 6-2 |
| W | QF | Khumoyun Sultanov | 6-4 6-1 |
| L | SF | Miomir Kecmanovic | 1-6 4-6 |
2016 Wimbledon Junior
| W | 1R | Elliot Benchetrit | 7-5 6-4 |
| W | 2R | Lev Kazakov | 3-6 6-1 6-4 |
| L | 3R | Jurabek Karimov | 6-7 4-6 |
2016 Roland Garros Junior
| L | 1R | Geoffrey Blancaneaux | 3-6 3-6 |
2016 Australian Open Junior
| W | 1R | Chien Hsun Lo | 6-2 3-6 6-1 |
| W | 2R | Moerani Bouzige | 6-2 6-2 |
| W | 3R | Miomir Kecmanovic | 4-6 6-2 8-6 |
| L | QF | Jurabek Karimov | 3-6 2-6 |
2015 Us Open Junior
| W | 1R | Manuel Pena Lopez | 6-3 6-3 |
| L | 2R | Reilly Opelka | 4-6 1-6 |
2015 Wimbledon Junior
| W | 1R | Alexis Canter | 7-6 7-5 |
| W | 2R | Mate Valkusz | 6-4 6-3 |
| L | 3R | Reilly Opelka | 6-7 3-6 |
2015 Roland Garros Junior
| L | 1R | Sumit Nagal | 3-6 5-7 |
2015 Australian Open Junior
| W | 1R | Alexei Popyrin | WO |
| L | 2R | Sumit Nagal | 2-6 3-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 9232, Number of registered players: 5,739, Number of registered results: 303,630