| William Jay Grierson | |
| Fullname: | William Jay Grierson |
| Birth Date: | 27 April 1998 |
| Birth Place: | Sai Ying Pun, Hong Kong |
| Height: | 1.88m |
| Currentclub: | Eastern District |
| Position: | Defender |
| Youthclubs1: | TSW Pegasus |
| Years1: | 2016-2020 |
| Clubs1: | Ateneo de Manila University |
| Years2: | 2021–2023 |
| Clubs2: | United City |
| Caps2: | 2 |
| Goals2: | 0 |
| Years3: | 2024– |
| Clubs3: | Eastern District |
| Caps3: | 9 |
| Goals3: | 0 |
| Nationalyears1: | 2015-2016 |
| Nationalteam1: | Philippines U19 |
| Nationalyears2: | 2019 |
| Nationalteam2: | Philippines U22 |
| Club-Update: | 8 July 2021 |
William Jay Grierson (; born 27 April 1998) is a professional footballer who currently plays for Hong Kong First Division side Eastern District.[1] [2]
Born in Sai Ying Pun, Hong Kong to a British father and a Chinese Filipino mother, William began his footballing journey in Hong Kong with the TSW Pegasus youth side in the local grassroots division.[3] He soon completed his tertiary education at the Ateneo de Manila University whilst representing the youth national team of the Philippines.[4] [5]
Grierson began his career with PFL side United City, striking his first professional deal aged 23.[6] William made his debut for the side in a 2-0 loss to J League side Kawasaki Frontale in the 2021 Asian Champions League group stage.[7] He departed the club ahead of the 2023 PFL season.
Grierson joined Eastern District on a free, ending his 1 year football hiatus.