Despite sumo's growing popularity, the number of people who took its entry exam ahead of the March tournament fell to a record low, underlining a serious shortage of talent in Japan's national sport.Only 20 would-be wrestlers gathered for the test, a physical and medical examination, for the ongoing Spring Grand Sumo Tournament. It was the lowest figure since a rule requiring aspirants to have completed their compulsory education -- through junior high school in Japan -- took effect in 1973.To become a sumo wrestler, applicants must be healthy men who meet the minimum requirements of 167 ce…READ FULL ARTICLE