CREATE TABLE table_77922 ("Team 1" TEXT, "Agg." TEXT, "Team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

What is the 1st leg where Team 1 is C.D. Plaza Amador?
SELECT "1st leg" FROM table_77922 WHERE "Team 1" = 'c.d. plaza amador'
SELECT "1st leg" FROM "table_77922" WHERE "Team 1" = 'c.d. plaza amador'