Stadium: Court B Round: 26 Ground: Hardcourt outdoor
| Nonthaburi, Simples M-ITF-THA-06A | 2019/11/26 07:40 | Saito, Takashi v Taiyo Yamanaka | 6-2,7-6 |
| Challenger Kobe | 2019/11/04 03:25 | Saito, Takashi v Sho Shimabukuro | 6-7,3-6 |
| ITF M25 Tay Ninh | 2019/10/01 06:05 | Saito, Takashi v Congsup Congcar | 6-2,2-6,6-4 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/28 02:00 | Saito, Takashi v Sabanin, Yan | 3-6,1-6 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/27 04:10 | Taisei Ichikawa v Saito, Takashi | 4-6,6-2,3-6 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/26 02:00 | Chandrasekar, Anirudh v Saito, Takashi | 7-5,0-6,0-6 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/24 02:00 | Tan, Li-Wie v Saito, Takashi | 6-1,1-6,1-6 |
| Hua Hin, Singles M-ITF-THA-07A | 2019/09/06 03:00 | Saito, Takashi v Yusuke Takahashi | 2-6,2-6 |
| Nonthaburi, Simples M-ITF-THA-06A | 2019/11/26 07:20 | Taisei Ichikawa v Nam, Ji Sung | 5-7,2-6 |
| Challenger Kobe | 2019/11/07 02:00 | Yuki Mochizuki v Nam, Ji Sung | 3-6,6-1,1-6 |
| Challenger Kobe | 2019/11/06 02:55 | Patael, Ben v Nam, Ji Sung | 2-6,4-6 |
| Shenzhen II, Chine | 2019/10/29 03:45 | Nam, Ji Sung v Zhe Li | 2-6,1-6 |
| Liuzhou, Chine | 2019/10/23 02:30 | Nam, Ji Sung v Petrovic, Danilo | 3-6,4-6 |
| Liuzhou, Chine | 2019/10/22 02:00 | Nam, Ji Sung v Kaichi Uchida | 6-3,7-6 |
| Ningbo, China | 2019/10/17 04:55 | Nam, Ji Sung v Klahn, Bradley | 6-7,6-7 |
| Ningbo, China | 2019/10/16 03:35 | Harris, Andrew v Nam, Ji Sung | 3-6,5-7 |