JES II,
The golfer who launches his drive 300+ yards and has a wedge into a green has no challenge.
Pat-
I don't know if that statement is 100% accurate. First, you still have to hit the green. I don't have the stats close at hand, but I feel pretty safe in saying that even the best players in the world don't hit the green 100% of the time with wedge in hand.
Next, depending on the course, the green(s) may be such that just hitting the green is not enough; one must be in the proper area of the green to have a reasonable two-putt. A specific example of this can be seen at Merion, on the 15th, for one example. Standing next to Kyle and Tom Paul, they witnessed my disbelief at the amount of break in a 15-foot putt needed to be played for a right-center hole location. Another example is Augusta National. I recall very well an interview with Norman where he said that one must be in the proper part of the green to have a chance to two-putt.
I remember several holes at Rolling Green which were like that as well-#1 (big green, contours), #13 (angle, small green) I remember most of those greens being tough to putt! (No comments, Wayne!
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Lastly, you still have to make the putt.
I think another example can be seen at Hidden Creek's 5th, as well as other holes on the course. The day we played it was putting a little slower (early in the year, still recovering from aeration) but I recall again; if you were at the back of the green (like I was), putting to a front hole location was a challenge!
Same with the Redan hole. (#4). I remember hitting a first putt on the line that looked correct--and it wasn't! Which is fine.
So, to answer your question of defending par at the green, one answer would be to make players play break through imaginative green contouring.
We could take this a step further and cite Pinehurst #2. Ross' original intentions or not, the approach shot is made difficult through the design of the green complexes.
Other courses have green complexes where missing in certain spots, with certain hole locations, is suicide. Again, this goes back to green contouring. I remember #7 at Congressional Gold, among others, being like this. Missing short, to front hole locations, and the ball will roll back down the hill a good 20 yards. I speak from experience.
Small greens-tighter target to hit. Oftentimes an easier up and down, but still a little harder to hit in order to have birdie putts.
I think the final thing I will mention for now, and this can be a subset of playing break or greens that break--is the opposite--greens that LOOK like they break, but DON'T. I'm sure most of us here have played courses like that. I recall #14 at Columbia CC being like this.
The opposite then, and I found this at Burning Tree, among other places, were greens that look like they don't break--but do! How frustrating. "But I hit a good putt!"