# Naoki Tajima

Naoki Tajima (田島 尚輝, Tajima Naoki, born 21 September 2000) is a Japanese tennis player.
Tajima has a career high ATP singles ranking of 603 achieved on 20 January 2021.
Tajima won the 2018 French Open – Boys' doubles title.

## ATP Challenger and ITF Futures finals
### Singles: 2 (0–2)

* Legend
* ATP Challenger (0–0)
* ITF Futures (0–2)
* Finals by surface
* Hard (0–1)
* Clay (0–1)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Jan 2019 | M15 Anning, China | World Tennis Tour | Clay | Agustín Velotti | 6–4, 3–6, 5–7 |
| Loss | 0–2 | May 2021 | M15 Kouvola, Finland | World Tennis Tour | Hard | Anton Matusevich | 1–6, 6–4, 0–6 |

### Doubles: 21 (7–14)

* Legend
* ATP Challenger (0–0)
* ITF Futures (7–14)
* Finals by surface
* Hard (6–11)
* Clay (1–3)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Win | 1–0 | Jan 2019 | M15 Anning, China | World Tennis Tour | Clay | Kento Takeuchi | Francesco Bessire Agustín Velotti | 4–6, 7–5, [10–7] |
| Win | 2–0 | Apr 2019 | M25 Matsuyama, Japan | World Tennis Tour | Hard | Shinji Hazawa | Cheong-Eui Kim Ji Sung Nam | 4–6, 6–1, [10–7] |
| Loss | 2–1 | Jan 2021 | M15 Cairo, Egypt | World Tennis Tour | Clay | Jose Francisco Vidal Azorin | Franco Agamenone Piotr Matuszewski | 6–4, 6–7$^{(5–7)}$, [7–10] |
| Loss | 2–2 | Apr 2021 | M15 St. Petersburg, Russia | World Tennis Tour | Hard | Alexey Zakharov | Alexandr Cozbinov Simon Freund | 4–6, 5–7 |
| Loss | 2–3 | Apr 2021 | M15 St. Petersburg, Russia | World Tennis Tour | Hard | Alexey Zakharov | Alexandr Cozbinov Simon Freund | 6–7$^{5–7}$, 6–2, [6–10] |
| Loss | 2–4 | Oct 2021 | M15 Cancún, Mexico | World Tennis Tour | Hard | Sho Shimabukuro | Siddhant Banthia Seita Watanabe | 6–1, 4–6, [3–10] |
| Win | 3–4 | Oct 2021 | M15 Cancún, Mexico | World Tennis Tour | Hard | Sho Shimabukuro | Peter Bertran Mwendwa Mbithi | 7–6$^{(7–5)}$, 6–4 |
| Win | 4–4 | Jan 2022 | M15 Monastir, Tunesia | World Tennis Tour | Hard | Kaito Uesugi | Loic Cloes Marat Deviatiarov | (W/O) |
| Win | 5–4 | Jan 2022 | M15 Monastir, Tunesia | World Tennis Tour | Hard | Kaito Uesugi | Martin Breysach Arthur Bouquier | 6–2 7–6$^{(7–5)}$ |
| Loss | 5–5 | Feb 2022 | M25 Canberra, Australia | World Tennis Tour | Hard | Calum Puttergill | Rubin Statham Akira Santillan | 4–6 3–6 |
| Loss | 5–6 | May 2022 | M15 Antalya, Turkey | World Tennis Tour | Clay | Yuta Shimizu | Juan Pablo Canas Garcia Pablo Llamas Ruiz | 4–6 5–7 |
| Loss | 5–7 | Sep 2022 | M25 Sapporo, Japan | World Tennis Tour | Hard | Rimpei Kawakami | Takuto Niki Takeru Yuzuki | 6–3, 4–6, [8–10] |
| Loss | 5–8 | Oct 2022 | M25 Kashiwa, Japan | World Tennis Tour | Hard | Seita Watanabe | Toshihide Matsui Kaito Uesugi | 3–6, 6–4, [5–10] |
| Loss | 5–9 | Jan 2023 | M15 Jakarta, Indonesia | World Tennis Tour | Hard | Keisuke Saitoh | Rivik Choudary Bollipalli Niki Kaliyanda Poonacha | 1–6, 3–6 |
| Loss | 5–10 | Feb 2023 | M15 Monastir, Tunesia | World Tennis Tour | Hard | Ryuki Matsuda | Tim Handel Yannik Steinegger | 4–6, 1–6 |
| Loss | 5–11 | Jun 2023 | M25 Anseong, South Korea | World Tennis Tour | Clay | Shunsuke Mitsui | Chung Yun-seong Takeru Yuzuki | 6–7$^{(3–7)}$, 4–6 |
| Win | 6–11 | Jul 2023 | M15 Caloundra, Australia | World Tennis Tour | Hard | Keisuke Saitoh | Jesse Delaney Dayne Kelly | 6–3, 6–1 |
| Win | 6–12 | Oct 2023 | M15 Cairns, Australia | World Tennis Tour | Hard | Kokoro Isomura | Kody Pearson Henrik Wiersholm | 2–6, 1–6 |
| Win | 7–12 | Jan 2024 | M15 Doha, Qatar | World Tennis Tour | Hard | Masamichi Imamura | Elliot Benchetrit Antoine Ghibaudo | 6–2, 6–3 |
| Loss | 7–13 | Jan 2024 | M15 Doha, Qatar | World Tennis Tour | Hard | Masamichi Imamura | Yanki Erel Ergi Kirkin | 6–4, 3–6, [2–10] |
| Loss | 7–14 | Jun 2024 | M15 Anseong, South Korea | World Tennis Tour | Hard | Ethan Cook | Kenta Miyoshi Edward Winter | 3–6, 7–5, [6–10] |

## Junior Grand Slam finals
### Doubles: 1 (1 title)

| Result | Year | Tournament | Surface | Partner | Opponents | Score |
| Win | 2018 | French Open | Clay | Ondřej Štyler | Ray Ho Tseng Chun-hsin | 6–4, 6–4 |