Career
The left-hander stands 1.72m and weighs 140 pounds. Yu started playing tennis at age six. He quickly emerged as one of Hong Kong"s most highly touted junior players.
Highlights of his junior career include ascending to a #70 junior world ranking.
Yu reached his career-high Association of Tennis Professionals ranking of #910 in the world on 13 June 2005. In doubles, he and Wong Wing Luen lost to former World Number.1s and eventual gold medalists Mahesh Bhupathi and Leander Paes.
In 2007, Yu gave up his professional tennis career, and began study towards an associate degree at HKU Space. On 2 May 2008, he was the 29th person to carry the olympic torch in the 2008 Olympics torch relay leg in Hong Kong.