Career
Yap represented Malaysia and competed at the 1996 Atlanta Olympics and the 2000 Sydney Olympics in the badminton men"s doubles event with Cheah Soon Kit. At the 1996 Atlanta Olympics, they had a bye in the first round and defeated Ha Tae-kwon and Kang Kyung-jin of of Korea in quarterfinals. In the final, Cheah and Yap lost to Rexy Mainaky and Ricky Subagja of Indonesia 15-5, 13-15, 12-15.
At the 2000 Sydney Olympics, they could only reached the second round before losing to the Korean doubles.