 Turkey: W15 Antalya 21 - Doubles - Main |
|---|
| 1/8-finals | Bojica S./Safta A. | Maruyama A./Niimi K. | 2:0 (6:1, 6:1) | dettagli | 18.12.2024 |
| Turkey: W15 Antalya 19 - Doubles - Main |
|---|
| Quarter-finals | Jessup M./Niimi K. | Mazzola A./Sevcikova L. | 0:2 (0:6, 1:6) | dettagli | 07.12.2024 |
| 1/8-finals | Kargina V. M./Slavikova E. | Jessup M./Niimi K. | 0:0 RET. (0:2) | dettagli | 05.12.2024 |
| Turkey: W15 Antalya 18 - Doubles - Main |
|---|
| 1/8-finals | Cirpanli D./Niimi K. | Rivkin N./Vlckova K. | 1:2 (6:3, 3:6, 6:10) | dettagli | 26.11.2024 |
| Turkey: W15 Antalya 17 - Doubles - Main |
|---|
| 1/8-finals | Niimi K./Pesci A. | Boehner L./Puls A. L. | 0:2 (2:6, 3:6) | dettagli | 20.11.2024 |
 Japan: W15 Sapporo - Doubles - Main |
|---|
| Quarter-finals | Ayukawa M./Parnaby A. | Niimi K./Tamura K. | 2:0 (6:3, 6:3) | dettagli | 27.07.2024 |
| 1/8-finals | Niimi K./Tamura K. | Kikawada R./Yuhan L. | 2:1 (7:5, 61:7, 10:7) | dettagli | 23.07.2024 |
| Turkey: W15 Antalya 21 - Doubles - Main |
|---|
| 1/8-finals | Jovanovic M./Niimi K. | Lazar S./Tiron E. C. A. | 1:2 (3:6, 6:4, 4:10) | dettagli | 07.12.2023 |
| Turkey: W15 Antalya 20 - Doubles - Main |
|---|
| Quarter-finals | Niimi K./Vasileva A. | Ceuca A. A./Kargina V. M. | 1:2 (7:64, 4:6, 5:10) | dettagli | 01.12.2023 |
| 1/8-finals | Mettraux M./Zaar L. | Niimi K./Vasileva A. | 1:2 (6:2, 3:6, 10:12) | dettagli | 30.11.2023 |
| Turkey: W15 Antalya 18 - Doubles - Main |
|---|
| 1/8-finals | Niimi K./Uyar M. A. | Pinto G./Squarcialupi G. | 1:2 (6:3, 4:6, 8:10) | dettagli | 15.11.2023 |
| Turkey: W15 Antalya 17 - Doubles - Main |
|---|
| 1/8-finals | Modesti V./Turkmen D. | Jovanovic M./Niimi K. | 2:1 (65:7, 6:3, 10:4) | dettagli | 08.11.2023 |
| Turkey: W15 Antalya 5 - Doubles - Main |
|---|
| Quarter-finals | Kuramochi M./Marinkovic B. | Niimi K./Piestrzynska A. | 2:0 (6:4, 6:0) | dettagli | 02.03.2023 |
| 1/8-finals | Niimi K./Piestrzynska A. | Matsuda R./Soke D. | 2:1 (2:6, 7:64, 10:4) | dettagli | 01.03.2023 |
| Turkey: W15 Antalya 4 - Doubles - Main |
|---|
| 1/8-finals | Dencheva R./Soke D. | Ksandinov S./Niimi K. | 2:0 (6:2, 6:2) | dettagli | 21.02.2023 |
| Turkey: W15 Antalya 21 - Doubles - Main |
|---|
| Final | Li Y./Niimi K. | Aikawa M./Van Impe A. | 2:0 (6:1, 6:2) | dettagli | 20.11.2022 |
| Semi-finals | Curovic T./Falkner Z. | Li Y./Niimi K. | WO. | dettagli | 18.11.2022 |
| Quarter-finals | Sevcikova L./Uyar M. A. | Li Y./Niimi K. | 0:2 (1:6, 62:7) | dettagli | 17.11.2022 |
| Turkey: W15 Antalya 20 - Doubles - Main |
|---|
| Quarter-finals | Uyar M. A./Vojcinakova I. | Kochelaevskaia A./Niimi K. | 2:1 (6:2, 5:7, 10:6) | dettagli | 10.11.2022 |
| 1/8-finals | Kochelaevskaia A./Niimi K. | Atay S./Elmas L. N. | 2:1 (7:5, 1:6, 10:2) | dettagli | 08.11.2022 |
| Japan: W25 Makinohara - Doubles - Main |
|---|
| 1/8-finals | Imamura S./Kozaki F. | Hasegawa M./Niimi K. | 2:0 (6:1, 6:1) | dettagli | 05.10.2022 |
 Tunisia: W15 Monastir 17 - Doubles - Main |
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| 1/8-finals | Reayer A./Romero C. | Niimi K./Saito S. | 2:0 (7:63, 6:4) | dettagli | 14.06.2022 |
| Tunisia: W15 Monastir 13 - Doubles - Main |
|---|
| 1/8-finals | Berriri C./Niimi K. | Milenkovic K./Wildgruber A. | 0:2 (2:6, 0:6) | dettagli | 18.05.2022 |
| Tunisia: W15 Monastir 45 - Doubles - Main |
|---|
| 1/8-finals | Berriri C./Niimi K. | Dejnozkova T./Pulchartova L. | 0:2 (4:6, 3:6) | dettagli | 23.11.2021 |
Australia: Australian Open - Singles - Qualification