| ITF Japan F6 | 04/10 03:20 | 25 | Takeuchi, Kento (1987) v Takeshima, Shunrou | 6-4,4-6,5-7 | |
| ITF Japan F4 | 03/27 03:00 | 25 | [466] Takeuchi, Kento (1987) v Katayama, Sho [425] | 6-4,4-6,5-7 | |
| ITF Japan F3 | 03/22 05:15 | 26 | Takeuchi, Kento (1987) v Makoto Ochi | 3-6,2-6 | |
| ITF Japan F3 | 03/19 01:00 | 25 | Takeuchi, Kento (1987) v Takeshima, Shunrou | 6-1,6-2 | |
| ITF Japan F2 | 03/14 02:40 | 26 | Takeuchi, Kento (1987) v Moritani, Soichiro | 4-6,0-6 | |
| ITF Japan F2 | 03/12 02:30 | 25 | Takeuchi, Kento (1987) v Masaya Kobayashi | 6-3,4-6,6-3 | |
| Yokohama, Japan, Qualifying | 02/24 01:00 | 45 | Takeuchi, Kento (1987) v Jumpei Yamasaki | 3-6,3-6 | |
| Challenger Kyoto Qual | 02/17 02:25 | 45 | Fujii, Shinta v Takeuchi, Kento (1987) | 0-6,7-6,6-4 | |
| Bangkok, Thaïlande | 01/08 04:55 | 25 | Marsel Ilhan v Takeuchi, Kento (1987) | 6-1,6-2 | |
| Bangkok, Thailand, Qualifying | 12/30 06:05 | 45 | Takeuchi, Kento (1987) v Granollers, Gerard | 2-6,3-6 | |
| Indonesia F8, Singles | 12/01 06:30 | 27 | Takeuchi, Kento (1987) v Gunneswaran, Prajnesh | 2-6,4-6 | |
| Indonesia F8, Singles | 11/29 04:00 | 26 | Takeuchi, Kento (1987) v Tung-Lin Wu | Retired | |
| Indonesia F8, Singles | 11/28 03:30 | 25 | Takeuchi, Kento (1987) v Fujii, Shinta | 7-6,6-3 | |
| ITF Indonesia F7 | 11/23 04:00 | 27 | Alexei Popyrin v Takeuchi, Kento (1987) | 6-1,6-2 | |
| ITF Indonesia F7 | 11/22 03:30 | 26 | Rungkat, Christopher v Takeuchi, Kento (1987) | Walkover | |
| ITF Indonesia F7 | 11/21 05:00 | 25 | Vilardo, Francesco v Takeuchi, Kento (1987) | 2-6,1-6 | |
| Challenger Toyota | 11/14 02:50 | 25 | [404] Takeuchi, Kento (1987) v Ehara, Hiroyasu [397] | 4-6,4-6 | |
| Challenger Toyota Qual | 11/12 07:15 | 54 | [402] Takeuchi, Kento (1987) v Kim, Cheong-Eui [488] | 5-7,6-4,7-6 | |
| Challenger Toyota Qual | 11/11 05:30 | 46 | [402] Takeuchi, Kento (1987) v Yi, Chu-Huan [136] | 6-2,6-7,6-4 | |
| Challenger Kobe Qual | 11/04 03:35 | 45 | [456] Yan Bai v Takeuchi, Kento (1987) [400] | 5-7,7-6,6-4 | |
| Ningbo, China, Qualifying | 10/15 04:10 | 46 | [476] Matosevic, Marinko v Takeuchi, Kento (1987) [411] | 6-3,6-1 | |
| ITF Thailand F8 | 10/11 06:15 | 26 | Shinji Hazawa v Takeuchi, Kento (1987) | 6-3,6-1 | |
| ITF Thailand F8 | 10/10 05:00 | 25 | Kuan-Yi Lee v Takeuchi, Kento (1987) | 1-6,6-4,4-6 | |
| ITF Thailand F7 | 10/05 02:35 | 27 | [410] Takeuchi, Kento (1987) v Hu, Nicholas S [480] | 5-7,6-2,6-7 | |
| ITF Thailand F7 | 10/04 03:00 | 26 | Takeuchi, Kento (1987) v Sidharth Rawat | 6-2,6-2 | |
| ITF Thailand F7 | 10/03 02:45 | 25 | Takeuchi, Kento (1987) v Callahan, Hunter | 6-3,6-4 | |
| Challenger - Gwangju | 09/19 05:10 | 25 | [411] Takeuchi, Kento (1987) v Polansky, Peter [128] | 2-6,4-6 | |
| Challenger Gwangju Qual | 09/17 03:45 | 54 | Takeuchi, Kento (1987) v Matosevic, Marinko | 2-6,2-6 | |
| Challenger Gwangju Qual | 09/16 03:20 | 46 | [422] Takeuchi, Kento (1987) v Hsieh, Cheng-Peng [105] | 6-1,6-2 | |
| Challenger Shanghai | 09/12 08:00 | 25 | [488] Kibi, Yuya v Takeuchi, Kento (1987) [422] | 6-4,6-4 |