Hoon and Ong participated in Indonesia Open 2008 and did their best as they became the semi-finalist, beaten by Candra Wijaya and Tony Gunawan. Latest, they played in China Masters 2008 but once again was beaten.
In 2010, Hoon and Ong were chosen to play for Malaysia Thomas Cup squad.
Currently, he is paired with Tan Wee Kiong. Hoon and Tan managed to break into the top 10 in 20th December 2012. They are currently ranked 7th in the world.