CREATE TABLE table_42173 ("Position" FLOAT, "Team" TEXT, "Points" FLOAT, "Played" FLOAT, "Drawn" FLOAT, "Lost" FLOAT, "Against" FLOAT, "Difference" TEXT)

Team Estudantes Paulista with a position less than 4 has what average against?
SELECT AVG("Against") FROM table_42173 WHERE "Team" = 'estudantes paulista' AND "Position" < '4'
SELECT AVG("Against") FROM "table_42173" WHERE "Position" < '4' AND "Team" = 'estudantes paulista'