Though Indonesia's doubles teams had contributed to its Thomas Cup successes in 1958 and in 1961, its singles players had led the way by losing only two matches in thirty and none in either Challenge Round. By 1964, however, "big guns" Tan Joe Hok and Ferry Sonneville were seemingly past their primes. Though only 26, Tan Joe Hok had been busy with studies and had played tournaments only infrequently and not very successfully over the previous two seasons. Sonneville was 33 and his last major tournament victories were also about two years old.