CREATE TABLE table_27743 ("Rd." CLOB, "Event" CLOB, "Circuit" CLOB, "City / State" CLOB, "Date" CLOB, "Championship" CLOB, "Challenge" CLOB, "Production" CLOB)

In what round was the circuit Eastern Creek Raceway?
SELECT "Rd." FROM table_27743 WHERE "Circuit" = 'Eastern Creek Raceway'
SELECT "Rd." FROM "table_27743" WHERE "Circuit" = 'Eastern Creek Raceway'