CREATE TABLE table_42892 ("Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Opponent in the final" CLOB, "Score" CLOB)

Who is the Opponent in the final on 4 April 2011?
SELECT "Opponent in the final" FROM table_42892 WHERE "Date" = '4 april 2011'
SELECT "Opponent in the final" FROM "table_42892" WHERE "Date" = '4 april 2011'