CREATE TABLE table_72104 ("Season" TEXT, "Competition" TEXT, "Round" TEXT, "Opponents" TEXT, "1st leg" TEXT, "2nd leg" TEXT, "Aggregate" TEXT)

what's the competition where 1st leg is 4-1 (h)
SELECT "Competition" FROM table_72104 WHERE "1st leg" = '4-1 (h)'
SELECT "Competition" FROM "table_72104" WHERE "1st leg" = '4-1 (h)'