| Luxembourg Open | 05/05 11:20 | - | Lanier, Alex v Teh, Jia Heng Jason | L | 2-0 | |
| Luxembourg Open | 05/04 14:40 | - | Darshan Pujari v Teh, Jia Heng Jason | W | 0-2 | |
| Luxembourg Open | 05/04 08:40 | - | 클라에르부트, 루카스 v Teh, Jia Heng Jason | W | 0-2 | |
| Luxembourg Open | 05/03 13:30 | - | Kian-Yu Oei v Teh, Jia Heng Jason | W | 0-2 | |
| Luxembourg Open | 05/03 09:25 | - | 가우딘, 야니스 v Teh, Jia Heng Jason | W | 0-2 | |
| Spain Masters | 03/28 12:20 | 4 | 초우, 티엔첸 v Teh, Jia Heng Jason | L | 2-1 | |
| Spain Masters | 03/27 10:45 | 5 | S.K. Karunakaran v Teh, Jia Heng Jason | W | 0-2 | |
| Spain Masters 2020, MS, Qualification | 03/26 12:45 | - | 벌마, 사메어 v Teh, Jia Heng Jason | W | 0-2 | |
| Spain Masters 2020, MS, Qualification | 03/26 09:00 | 4 | 치엄 , 준 웨이 v Teh, Jia Heng Jason | W | 0-2 | |
| Polish Open | 03/24 12:20 | - | Victor Ørding Kauffmann v Teh, Jia Heng Jason | L | 2-1 | |
| Polish Open | 03/24 08:40 | - | Darshan Pujari v Teh, Jia Heng Jason | W | 1-2 | |
| Polish Open | 03/23 15:45 | - | Meiraba Luwang Maisnam v Teh, Jia Heng Jason | W | 0-2 | |
| Polish Open | 03/23 11:00 | - | 킥리츠, 마티아스 v Teh, Jia Heng Jason | W | 0-2 | |
| Polish Open | 03/22 16:40 | - | Jun Hui Marcus Lau v Teh, Jia Heng Jason | W | 0-2 | |
| Orleans Masters | 03/13 10:20 | 5 | 코엘류 더 올리베이라, 이고르 v Teh, Jia Heng Jason | L | 2-1 | |
| Thailand Masters 2020, MS | 01/31 04:15 | 5 | Teh, Jia Heng Jason v Lin, C.-Y. | L | 1-2 | |
| Thailand Masters 2020, MS, Qualification | 01/30 03:00 | 4 | Jhuo-Fu Liao v Teh, Jia Heng Jason | - | Cancelled | |
| Indonesian Masters Qual | 01/23 03:40 | 4 | 레옹, 준 하오 v Teh, Jia Heng Jason | L | 2-0 | |
| Guwahati Masters | 12/08 08:50 | 3 | Yohanes Saut Marcellyno v Teh, Jia Heng Jason | L | 2-1 | |
| Guwahati Masters | 12/07 07:30 | 4 | Teh, Jia Heng Jason v Meiraba Luwang Maisnam | W | 2-0 | |
| Guwahati Masters | 12/06 08:05 | 5 | Teh, Jia Heng Jason v Tharun Mannepalli | W | 2-0 | |
| Syed Modi India Int. | 11/29 03:55 | 5 | Teh, Jia Heng Jason v 치, 유 젠 | L | 0-2 | |
| Korea Masters | 11/08 11:40 | 5 | 레옹, 준 하오 v Teh, Jia Heng Jason | L | 2-1 | |
| Korea Masters 2019, MS, Qualification | 11/07 01:00 | 4 | Teh, Jia Heng Jason v Opeyori, Anuoluwapo Juwon | - | Cancelled | |
| KL Masters | 11/03 08:10 | 3 | Sholeh Aidil v Teh, Jia Heng Jason | L | 2-1 | |
| KL Masters | 11/02 06:05 | 4 | Teh, Jia Heng Jason v Chan, Y. C. | W | 2-0 | |
| KL Masters | 11/01 02:35 | 5 | 치엄 , 준 웨이 v Teh, Jia Heng Jason | W | 0-2 | |
| KL Masters | 11/01 02:00 | - | 치엄 , 준 웨이 v Teh, Jia Heng Jason | W | 0-2 | |
| KL Masters | 10/31 11:25 | 6 | Jack Yu v Teh, Jia Heng Jason | W | 1-2 | |
| Vietnam Open | 09/16 06:47 | 2 | Teh, Jia Heng Jason v 오바야시, 타쿠마 | L | 1-2 |