 Complete the following phrase:  In 1966 he won mens singles at the All England Open Badminton Championships, then considered the unofficial World Badminton Championships, defeating Japans Masao Akiyama in the finals. This came during a run of four straight appearances in the All England finals from 1965 through 1968. He lost hard-fought matches to Erland Kops in 65 and 67 and to Rudy Hartono in 68. Tan was a member of four Malaysian Thomas Cup mens international teams including its world champion team of 