CREATE TABLE table_25435 ("Edition" TEXT, "Round" TEXT, "Date" TEXT, "Against" TEXT, "Surface" TEXT, "Opponent" TEXT, "W\\u2013L" TEXT, "Result" TEXT)

Name the surface against monaco
SELECT "Surface" FROM table_25435 WHERE "Against" = 'Monaco'
SELECT "Surface" FROM "table_25435" WHERE "Against" = 'Monaco'