Stadium: Court 5 Round: 27 Ground: Clay
| ITF M15 Grasse | 2019/05/02 13:45 | Naoki Tajima v Broville, Maxence | 6-2,6-2 |
| ITF M15 Grasse | 2019/04/30 15:10 | Tchoutakian, Maxime v Naoki Tajima | 4-6,4-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/12 05:20 | Naoki Tajima v Sekiguchi, Shuichi | 4-6,4-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/12 02:35 | Masamichi Imamura v Naoki Tajima | 2-6,4-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/11 01:00 | Naoki Tajima v Kousuke Ogura | 6-4,6-0 |
| ITF - M15 Kashiwa | 2019/04/03 03:05 | Tamaki Yamao v Naoki Tajima | 6-1,3-6,6-2 |
| ITF - M15 Tsukuba | 2019/03/30 01:00 | Naoki Tajima v Shintaro Imai | 1-6,2-6 |
| ITF - M15 Tsukuba | 2019/03/29 03:35 | Naoki Tajima v Yuta Shimizu | 6-4,7-6 |
| ITF M15 Grasse | 2019/05/02 15:45 | Lescure, Mick v Kirill Kivattsev | 0-6,1-6 |
| ITF M15 Grasse | 2019/04/30 09:00 | Dane Sweeny v Kirill Kivattsev | 0-6,4-6 |
| ITF - M25 Santa Margherita | 2019/04/19 12:00 | Kirill Kivattsev v Hugo Gaston | 6-3,3-6,0-6 |
| ITF - M25 Santa Margherita | 2019/04/18 12:00 | Kirill Kivattsev v Slobodchikov, Ronald | 6-1,3-6,7-5 |
| ITF - M25 Santa Margherita | 2019/04/16 14:30 | Gomez, Alejandro v Kirill Kivattsev | 0-6,2-6 |
| ITF - M25 Santa Margherita | 2019/04/09 15:00 | Kirill Kivattsev v Gomez, Alejandro | 2-6,1-6 |
| ITF - M15 Opatija | 2019/03/27 08:30 | Sabanov, Matej v Kirill Kivattsev | 6-7,6-4,6-1 |
| ITF - M15 Antalya | 2019/03/20 09:40 | Kirill Kivattsev v Sabanin, Yan | 3-6,6-4,6-7 |