CREATE TABLE table_10746 ("Round" TEXT, "Date" TEXT, "Opponent" TEXT, "Venue" TEXT, "Result" TEXT, "Attendance" FLOAT)

Whose attendance was the highest when the team played Arsenal?
SELECT MAX("Attendance") FROM table_10746 WHERE "Opponent" = 'arsenal'
SELECT MAX("Attendance") FROM "table_10746" WHERE "Opponent" = 'arsenal'