CREATE TABLE table_21361 ("Date" TEXT, "Opponent" TEXT, "Venue" TEXT, "Result" TEXT, "Attendance" TEXT, "Competition" TEXT, "Man of the Match" TEXT)

who was the opponent where the date was the 21st?
SELECT "Opponent" FROM table_21361 WHERE "Date" = '21st'
SELECT "Opponent" FROM "table_21361" WHERE "Date" = '21st'