CREATE TABLE table_57658 ("Date" CLOB, "Location" CLOB, "Opponent" CLOB, "Score" CLOB, "Competition" CLOB)

When was the event that had Liberia as an opponent and resulted in a 1-0 score?
SELECT "Date" FROM table_57658 WHERE "Opponent" = 'liberia' AND "Score" = '1-0'
SELECT "Date" FROM "table_57658" WHERE "Opponent" = 'liberia' AND "Score" = '1-0'