CREATE TABLE table_32222 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

What's the lowest round with the opponent John Howard that had a method of Decision (unanimous)?
SELECT MIN("Round") FROM table_32222 WHERE "Method" = 'decision (unanimous)' AND "Opponent" = 'john howard'
SELECT MIN("Round") FROM "table_32222" WHERE "Method" = 'decision (unanimous)' AND "Opponent" = 'john howard'