CREATE TABLE table_24426072_1 (team__number1 VARCHAR)

What was the 2nd leg for team #1 River Plate?
SELECT 2 AS nd_leg FROM table_24426072_1 WHERE team__number1 = "River Plate"
SELECT 2 AS "nd_leg" FROM "table_24426072_1" WHERE "River Plate" = "team__number1"