ATP Tennis - Thiago Monteiro
- Tournament: N/A
- Round: N/A
- Opponent: N/A
- DOB: 1994-05-31
- Birthplace: Brazil, Brazil
- Height: N/A
- Weight: N/A
- Plays: L
- Current World Rank: 92
- Hard: 11-24
- Clay: 35-43
- Grass: 1-3
| Tournament | Date | Sets | Round | Winner | Loser |
|---|---|---|---|---|---|
| BNP Paribas Open | Oct 7, 2021 | 6-4, 6-3 | First Round | Tennys Sandgren | Thiago Monteiro |
| US Open | Aug 30, 2021 | 6-3, 6-7 (6-8), 6-4, 6-1 | First Round | Daniel Evans | Thiago Monteiro |
| Winston-Salem Open | Aug 25, 2021 | 7-5, 7-6 (7-2) | Third Round | Frances Tiafoe | Thiago Monteiro |
| Winston-Salem Open | Aug 24, 2021 | 7-5, 6-1 | Second Round | Thiago Monteiro | Eduardo Nava |
| Winston-Salem Open | Aug 22, 2021 | 6-4, 4-6, 7-6 (7-5) | First Round | Thiago Monteiro | James Duckworth |
| Swedish Open | Jul 12, 2021 | 6-2, 7-5 | First Round | Yannick Hanfmann | Thiago Monteiro |
| Wimbledon | Jun 30, 2021 | 6-3, 6-3, 6-3 | First Round | Felix Auger-Aliassime | Thiago Monteiro |
| Roland Garros | Jun 2, 2021 | 6-3, 6-7 (2-7), 7-6 (7-2), 3-6, 6-3 | Second Round | Steve Johnson | Thiago Monteiro |
| Roland Garros | May 31, 2021 | 6-3, 6-4, 6-3 | First Round | Thiago Monteiro | Francisco Cerundolo |
| Serbia Open | May 26, 2021 | 7-6 (8-6), 3-6, 6-4 | Second Round | Federico Delbonis | Thiago Monteiro |
| Tournament | Date | Sets | Round | Winner | Loser |
|---|---|---|---|---|---|
| BNP Paribas Open | Oct 7, 2021 | 6-4, 6-3 | First Round | Tennys Sandgren | Thiago Monteiro |
| BNP Paribas Open | Mar 9, 2017 | 7-6 (8-6), 6-3 | First Round | Martin Klizan | Thiago Monteiro |
