[2] His father Julius Valdez, was a sports shooter like himself and a three-time gold medalist at the Southeast Asian Games.

[1] Initially Jayson took up taekwondo at age 13 and only played sports shooting with his father for leisure purposes only.

[6] He competed in the 2019 Southeast Asian Games which was hosted by the Philippines but failed to make a podium finish.

[8] Amidst the COVID-19 pandemic, Valdez decided to loss weight as part of his bid to get enlisted in the Philippine Army believing that the 2020 Summer Olympics scheduled to be held in Tokyo, Japan would be cancelled.

[8] Competing in the men's 10 m air rifle, Valdez failed to progress to the event final after scoring 612.6 in the qualification round.