CREATE TABLE table_68946 ("Year" TEXT, "Men's singles" TEXT, "Women's singles" TEXT, "Men's doubles" TEXT, "Women's doubles" TEXT, "Mixed doubles" TEXT)

who won the men's doubles in 1933?
SELECT "Men's doubles" FROM table_68946 WHERE "Year" = '1933'
SELECT "Men's doubles" FROM "table_68946" WHERE "Year" = '1933'