CREATE TABLE table_name_81 (result VARCHAR2, opponent VARCHAR2, date VARCHAR2)

What is the result against Errol Zimmerman on 2007-04-07?
SELECT result FROM table_name_81 WHERE opponent = "errol zimmerman" AND date = "2007-04-07"
SELECT "result" FROM "table_name_81" WHERE "2007-04-07" = "date" AND "errol zimmerman" = "opponent"