how many teams were first round eliminated by estudiantes in 2008 copa sudamericana
CREATE TABLE "table1_18027411_1" (
  "team_competition" text,
  "2008_suruga_bank_championship" text,
  "2008_recopa_sudamericana" text,
  "2008_copa_sudamericana" text,
  "2009_copa_libertadores" text
);
SELECT COUNT("2008_suruga_bank_championship") FROM "table1_18027411_1" WHERE "2008_copa_sudamericana"='First Round eliminated by Estudiantes';