Question: WHicH round Has an H/A of H?
SQL: SELECT "Round" FROM "2-18223552-5" WHERE "H / A" = 'H';

Question: Rich round hAs An H/A of A And the opponent Sheffield United?
SQL: SELECT "Round" FROM "2-18223552-5" WHERE "H / A" = 'A' AND "Opponents" = 'Sheffield United';