karier
He also was label by most of football commentator as a "worst referee" in the history. This is because,during the match between Malaysia and China in Asian games 2010, he was made a wrong decision by giving three red cards to Malaysian players. Moreover, his decision was involve some biases whereas every standard tackle that was made by Malaysian players was issued with cards.
http://en.wikipedia.org/wiki/Ben_Williams_%28referee%29