CREATE TABLE table_12741 ("Home  ( 1st leg ) " TEXT, "Home  ( 2nd leg ) " TEXT, "1st Leg" TEXT, "2nd leg" TEXT, "Aggregate" TEXT)

What was the 1st leg that had a 4-2 aggregate?
SELECT "1st Leg" FROM table_12741 WHERE "Aggregate" = '4-2'
SELECT "1st Leg" FROM "table_12741" WHERE "Aggregate" = '4-2'