CREATE TABLE table_8267 ("Tie no" TEXT, "Home team" TEXT, "Score" TEXT, "Away team" TEXT, "Attendance" TEXT)

What was the tie number when the away team was Wrexham?
SELECT "Tie no" FROM table_8267 WHERE "Away team" = 'wrexham'
SELECT "Tie no" FROM "table_8267" WHERE "Away team" = 'wrexham'