CREATE TABLE table_73740 ("Year" FLOAT, "Division" FLOAT, "League" CLOB, "Reg. Season" CLOB, "Playoffs" CLOB, "Open Cup" CLOB)

Name the number of playoffs for 3rd round
SELECT COUNT("Playoffs") FROM table_73740 WHERE "Open Cup" = '3rd Round'
SELECT COUNT("Playoffs") FROM "table_73740" WHERE "Open Cup" = '3rd Round'