 Nyorera kupfuurira kweiyi ndima - Panguva iyo Thailand yaizivikanwa nenyanzvi dzayo dzakapetwa kaviri, Chumkum akahwina mazita mazhinji emarudzi evarume veThailand akapetwa kaviri kupfuura chero mumwe mutambi wenguva yake. Nhoroondo yake yeThomas Cup chikwata chenyika dzevarume inokosha zvikuru. Kubatanidzwa mu60-61, 63-64, uye 69-70 mishandirapamwe Thailand yakaramba kukwikwidza mu 66-67, Chumkum akakunda 19 yemitambo 23 yevakapetwa iyo yaakakwikwidza mukubatana mitambo yechikwata vachipesana neIndonesia, Denmark, Malaysia, Japan, neIndia pakati pemamwe marudzi. Akatora zita revarume vaviri pa1965 Asian Badminton Championships naNarong Bhornchima. Achishanyira nyika dzakawanda muna 1968 akagovana Dutch Open uye Canadian Open mazita evarume maviri, uye akasvika kuAll-England varume vaviri semifinal, naSangob Rattanusorn. 