CREATE TABLE table_65430 ("Season" TEXT, "1st round" TEXT, "2nd round" TEXT, "3rd round" TEXT, "Finals" TEXT)

Which 3rd round has a 1st round of ?
SELECT "3rd round" FROM table_65430 WHERE "1st round" = '—'
SELECT "3rd round" FROM "table_65430" WHERE "1st round" = '—'