CREATE TABLE table_13871 ("Date" TEXT, "Season" TEXT, "Playing for" TEXT, "Opponent" TEXT, "Final score" TEXT)

who is playing for when the opponent is deportes savio and the date is 2010-03-11?
SELECT "Playing for" FROM table_13871 WHERE "Opponent" = 'deportes savio' AND "Date" = '2010-03-11'
SELECT "Playing for" FROM "table_13871" WHERE "Date" = '2010-03-11' AND "Opponent" = 'deportes savio'