United States tennis player who in 1938 was the first to win the Australian and French and English and United States singles championship in the same year (1915-2000)
the act of modifying or changing the strength of some idea; "his new position involves a qualification of his party's platform"
an attribute that must be met or complied with and that fits a person for something; "her qualifications for the job are excellent"; "one of the qualifications for admission is an academic degree"; "she has the makings of fine musician"