CREATE TABLE table_21341 ("Date" TEXT, "Opponent" TEXT, "Venue" TEXT, "Result" TEXT, "Attendance" FLOAT, "Competition" TEXT, "Man of the Match" TEXT)

Who was the opponent of the game with final score won 4-1?
SELECT "Opponent" FROM table_21341 WHERE "Result" = 'Won 4-1'
SELECT "Opponent" FROM "table_21341" WHERE "Result" = 'Won 4-1'