CREATE TABLE table_71679 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent in the final" TEXT, "Score" TEXT)

Who was the opponent in the final on 5 July 1992?
SELECT "Opponent in the final" FROM table_71679 WHERE "Date" = '5 july 1992'
SELECT "Opponent in the final" FROM "table_71679" WHERE "Date" = '5 july 1992'