At its best, the US Open demands straight drives, crisp iron shots, brilliant chipping and putting, and strategic position play. Plus the patience of St. Francis and the will of Patton. At its worst, the Open eradicates the difference in ability between a Tom Purtzer and a Tom Watson and throws both in the same jail of high rough and high risk shots. This is the disturbing tendency in the Opens of the seventies and eighties, one which worries everyone in golf.