Sebastian Baez
2018
| Us Open Junior | [2] | 2R |
| Wimbledon Junior | [2] | 1R |
| Roland Garros Junior | [1] | Final |
| Australian Open Junior | [3] | 2R |
2017
| Us Open Junior | [10] | Quarter |
| Wimbledon Junior | 1R | |
| Roland Garros Junior | [13] | 1R |
Nation
ARG
Age
24 years old (born in 2000)
World Ranking
ATP Ranking　35th
Year-end Junior World Ranking
- Year-end 2018 3th
Match Details
2018 Us Open Junior
| W | 1R | Dostanbek Tashbulatov | 6-3 7-5 |
| L | 2R | Daniel Michalski | 4-6 4-6 |
2018 Wimbledon Junior
| L | 1R | Gilbert Soares Klier Junior | 2-6 4-6 |
2018 Roland Garros Junior
| W | 1R | Mathys Erhard | 6-7 6-3 6-0 |
| W | 2R | Naoki Tajima | 3-6 6-2 6-2 |
| W | 3R | Kyrian Jacquet | WO |
| W | QF | Nick Hardt | 1-6 7-6 7-5 |
| W | SF | Thiago Seyboth Wild | 6-2 6-2 |
| L | F | Chun Hsin Tseng | 6-7 2-6 |
2018 Australian Open Junior
| W | 1R | Admir Kalender | 6-7 6-3 6-3 |
| L | 2R | Ray Ho | 3-6 6-3 4-6 |
2017 Us Open Junior
| W | 1R | Gabriel Decamps | 4-6 6-3 6-4 |
| W | 2R | Alafia Ayeni | 6-4 6-4 |
| W | 3R | Trey Hilderbrand | 4-6 6-2 7-5 |
| L | QF | Emil Ruusuvuori | 6-7 4-6 |
2017 Wimbledon Junior
| L | 1R | Corentin Moutet | 4-6 3-6 |
2017 Roland Garros Junior
| L | 1R | Blake Ellis | 0-6 3-6 |
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