| Malaysia Super 100 Women | 10/15 04:40 | 5 |
Sin Yan Happy Lo v
Ga Eun Park
|
L | 1-2 | |
| Korea Open Women | 09/24 10:50 | 5 |
Pin-Chian Chiu
v
Sin Yan Happy Lo
|
L | 2-0 | |
| Hong Kong Open Women | 09/10 01:30 | 5 |
Zhi Yi Wang
v
Sin Yan Happy Lo
|
L | 2-0 | |
| Hong Kong Open Women Qual | 09/09 03:50 | 3 |
Yi-Ting Hung
v
Sin Yan Happy Lo
|
W | 0-2 | |
| World Championships Women | 08/26 18:20 | 6 |
Sin Yan Happy Lo v
Putri Kusuma Wardani
|
L | 0-2 | |
| Macau Open Women | 07/31 09:50 | 4 |
Hsiang Ti Lin
v
Sin Yan Happy Lo
|
L | 2-0 | |
| Macau Open Women | 07/30 05:50 | 5 |
Karupathevan Letshanaa
v
Sin Yan Happy Lo
|
W | 1-2 | |
| Thailand Open Women | 05/14 07:45 | 5 |
Pornpawee Chochuwong
v
Sin Yan Happy Lo
|
L | 2-0 | |
| Sudirman Cup Women | 04/28 09:50 | - |
Yu Fei Chen
v
Sin Yan Happy Lo
|
L | 2-0 | |
| Sudirman Cup Women | 04/27 02:20 | - |
Pornpawee Chochuwong
v
Sin Yan Happy Lo
|
L | 2-0 | |
| Asia Championships Women | 04/09 01:00 | 5 |
Sin Yan Happy Lo v
Supanida Katethong
|
L | 0-2 | |
| Orleans Masters Women | 03/06 14:40 | 4 |
Kirsty Gilmour
v
Sin Yan Happy Lo
|
L | 2-0 |
Happy Lo Sin Yan (Chinese: 盧善恩; Jyutping: lou4 sin6 jan1; born Cheng Sin Yan, 25 February 2003) is a badminton player from Hong Kong. She competed at the 2024 Paris Olympics.
She was a member of the Hong Kong team that participated at the 2022 Asian Games, where she lost her opening match to Japanese world number 10 and defending champion, Aya Ohori. In the team event, she lost to Taiwanese player Tai Tzu-ying as part of a 3–0 defeat for Hong Kong.
In December 2023, she defeated top seed Hsu Wen-chi on her way to the final at the 2023 Odisha Masters. She competed for Hong Kong that reached the quarter-finals at the 2024 Badminton Asia Team Championships in Malaysia.
She competed in the women's singles at the 2024 Paris Olympics.