CREATE TABLE table_51819 ("Tournament" CLOB, "1968" CLOB, "1969" CLOB, "1970" CLOB, "1971" CLOB, "1972" CLOB, "1973" CLOB, "1974" CLOB, "1975" CLOB, "1976" CLOB, "1977" CLOB, "1978" CLOB, "1979" CLOB, "Career SR" CLOB, "Career W\\u2013L" CLOB, "Career Win %" CLOB)

What is the career W-L of the tournament that is listed as A in 1968 and 4R in 1974?
SELECT "Career W\u2013L" FROM table_51819 WHERE "1968" = 'a' AND "1974" = '4r'
SELECT "Career W\u2013L" FROM "table_51819" WHERE "1968" = 'a' AND "1974" = '4r'