 Complete the following phrase:  With a game marked by impressive mobility and consistency, during the 1960s he rated among the worlds elite singles players. He reached the final of the prestigious All-England Championship in 1963, the semifinals in both 1964 and 1965, and won the open championships of Canada 1964, 1965 and the United States 1964, 1968. Channarong played a leading role on the Thai Thomas Cup mens international teams of 