He was part of the Rest of the World Team for the 1986 World Cup that was eliminated after losing 0–5 to Canada in their first match. Sim Ngam played one , which he lost 6–102 to Bill Werbeniuk. In the qualifying rounds for the 1986 World Snooker Championship, Sim Ngam whitewashed Bernard Bennett 10–0 before losing in the to Paul Medati, 9–10.