CREATE TABLE table_24152 ("Outcome" TEXT, "Year" FLOAT, "Championship" TEXT, "Surface" TEXT, "Partner" TEXT, "Opponents in the final" TEXT, "Score in the final" TEXT)

Who were D rr's opponents in the final on year 1968?
SELECT "Opponents in the final" FROM table_24152 WHERE "Year" = '1968'
SELECT "Opponents in the final" FROM "table_24152" WHERE "Year" = '1968'