When Carlos Frias arrived in the Dodgers' clubhouse in August, the conventional route was to force the rookie pitcher into a limited array of roles.Emergency spot starter.Long reliever, preferably during an inconsequential blowout.That's what happens to 24-year-old rookies who had never pitched above Double-A baseball prior to the current year, who had an ERA in the fives during his first Triple-A season, right?Carlos Frias, apparently, is no ordinary rookie.