As a teenager Hock spent too much time playing video games and was extremely overweight. After watching a video of Mike Tyson he decided to join the Juggernaut Fight Club and take up martial arts, at the time he weighed 95 kg. He took gold at the Singapore National Boxing Championships in 2010 and again in 2011, plus the gold in the Invitational Boxing Championship the same year after dropping a weight class. In 2012 he decided to make a foray into wrestling competition at the Singapore National wrestling trials. He ended up winning bronze in his division and was selected for the national team.
Hock made his professional MMA debut at ONE Fighting Championship: War of the Lions at the Singapore Indoor Stadium on March 31, 2012 after learning MMA for less than a year. His original opponent was supposed to be another fighter from Singapore  also making his debut but he got injured and was replaced at the last minute by the more experienced Major Overall.
Hock won by rear naked choke in the second round 
Speaking after the fight Hock said he had been particularly happy to win by submission because he had only been learning BJJ for about 10 months.