CREATE TABLE table_61203 ("Team 1" TEXT, "Agg." TEXT, "Team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

What is the 2nd leg that Team 1 is Union Berlin?
SELECT "2nd leg" FROM table_61203 WHERE "Team 1" = 'union berlin'
SELECT "2nd leg" FROM "table_61203" WHERE "Team 1" = 'union berlin'