Italy: Padova - Singles - Main
United Kingdom: Wimbledon - Singles - Main
France: French Open - Singles - Qualification
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Siimar Mattias (Estonia)
- Mostrar:
 World: Davis Cup - World Group II - Singles - Main | |||||||
|---|---|---|---|---|---|---|---|
| Stricker D. | Siimar M. | CAN. | detalhes | 18.09.2021 | |||
| Laaksonen H. | Siimar M. | 2:0 (6:4, 6:0) | detalhes | 17.09.2021 | |||
| Estonia: M15 Parnu - Singles - Main | |||||||
| Final | Kirkin E. | Siimar M. | 2:1 (5:7, 6:3, 6:3) | detalhes | 08.08.2021 | ||
| Semi-finals | Siimar M. | Ivanov V. | 2:1 (6:4, 3:6, 6:2) | detalhes | 07.08.2021 | ||
| Quarter-finals | Raisma K. | Siimar M. | 0:1 RET. (4:6, 0:1) | detalhes | 06.08.2021 | ||
- Mostrar:
| World: Davis Cup - World Group II - Doubles - Main | |||||||
|---|---|---|---|---|---|---|---|
| Bedene A./Kavcic B. | Raisma K./Siimar M. | 2:1 (6:3, 3:6, 6:1) | detalhes | 18.09.2022 | |||
 USA: M15 Tallahassee, FL - Doubles - Main | |||||||
| Semi-finals | Draxl L./McNally J. | Shelton B./Siimar M. | 2:0 (6:4, 6:4) | detalhes | 29.10.2021 | ||
| Quarter-finals | Kuzuhara B./Shelbayh A. | Shelton B./Siimar M. | 1:2 (6:3, 3:6, 5:10) | detalhes | 28.10.2021 | ||
| 1/8-finals | Cornut-Chauvinc A./Pourroy L. | Shelton B./Siimar M. | 0:2 (3:6, 4:6) | detalhes | 26.10.2021 | ||
| World: Davis Cup - World Group II - Doubles - Main | |||||||
| Huesler M./Stricker D. | Ivanov V./Siimar M. | 2:0 (6:4, 7:64) | detalhes | 18.09.2021 | |||