So we all agree Merion US Opens are about mid and long irons. Hy Peskin's photo of Hogan on the 72nd hole in 1950 burned into our golfer subconsciouses the association of Merion with 1-irons (for some, 2-irons).
Most US Opens place special emphasis on those clubs: narrow the fairways and grow the rough -> use driver as little as possible -> trade distance for position off the tee -> longer distances into par 4 greens -> hit mid / long iron / hybrid.
Due to Merion's lack of length for golfers floggers, the USGA apparently has buttressed the course's defenses off the tee even by the standards of a "typical" US Open: growing really long rough, narrowing the fairways to what some say are ridiculous widths and moving in fairway bunkers in at least one instance (16th I think).
So questions about driver off the tee seem misplaced.
Players won't use drivers much, but in the 1971 and 1981 opens they probably didn't use the club much, either. Certainly less frequently than a "standard" US Open. Nicklaus was long, yes, so he is not representative but here is his club selection off the tee on par 4s in the first round of the 1971 Open:
Driver 3x
3-wood 6x
1-iron 2x
2-iron 1x
So the real question in my mind is, what clubs will this year's golfers be hitting into the par 4 greens? And to understand that question it would help to know what clubs champions of previous opens hit into par 4 greens. Their yardages to the greens would be helpful as well.
Does anyone have that information, specifically for the 1950, 1971 or 1981 opens?
Even limited information would be helpful. We know Hogan hit a ~240-yard driver and a ~215 1-iron on the 458-yard par 4 18th; what about Trevino and Graham?