CREATE TABLE table_21354 ("Date" TEXT, "Opponent" TEXT, "Venue" TEXT, "Result" TEXT, "Attendance" FLOAT, "Competition" TEXT, "Man of the Match" TEXT)

At what venue did Alex Mettam/Mark Williams be named Man of the Match?
SELECT "Venue" FROM table_21354 WHERE "Man of the Match" = 'Alex Mettam/Mark Williams'
SELECT "Venue" FROM "table_21354" WHERE "Man of the Match" = 'Alex Mettam/Mark Williams'