CREATE TABLE table_name_23 (career_w_l VARCHAR2)

What is the career W-L of the tournament that is listed as A in 1968 and 4R in 1974?
SELECT career_w_l FROM table_name_23 WHERE 1968 = "a" AND 1974 = "4r"
SELECT "career_w_l" FROM "table_name_23" WHERE "4r" = 1974 AND "a" = 1968