He also won the International Billiards and Snooker Federation World Championship in 2015 (short format), 2016 and 2019 (long up).

[4] Gilchrist represented Singapore in the SEA Games in 2009,[5] where he won Gold for English Billiards Singles, and Bronze for the doubles.

[9] Gilchrist won the 2019 Pacific International Billiards Championship, beating Sourav Kothari 1500–706 in the final.

[10] In 2022, during the 2021 Southeast Asian Games, Gilchrist won the silver medal after losing 3–1 to Myanmar's Pauk Sa, ending a streak of six gold medals in the English billiards men's singles event.

[11] Gilchrist is a two-time recipient of the Singapore Sports Awards' Sportsman of the Year title (2014 and 2020).