Pat got me thinking on this at Baltusrol, and I hav listed the holes with contoured approaches below. Most of the holes at Baltusrol have an open approach that will receive a run up shot, particularly in the case where the preceding shot is placed on the proper side of the fairway, where the green opens its best face to receive a running shot. The par 3's, particularly the short to mid length ones do not allow a running approach and they are generally closed in front.
Lower -- 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 17...(note, two of the par 3's, the 4th and 16th, do not have an approach ramp; please also note that the approaches on 5 and 17 were recently reinstated under the Rees Jones Master plan, which has also recommended returning the approach ramp on 18 Lower and hopefully that will happen sometime soon. The approach on 5 was brought down to the top of the bunker fronting the knoll on which the green sits and this coupled with the expansion of the green back to its original contours restores the Skyline green feature on this hole; the reinstatement of the approach on 17 brings back the slight double-dog-leg, and rewards the properly placed second shot with a open view of the green versus the semi-blind pitch for thosed that bail out to the right side of the fairway with their second shots)
Upper -- 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18...(note, the par 3 15th is the only hole that does not have an approach ramp; please also note that under the Rees Jones Master Plan the approach ramps were reinstated on 7, 8, & 10 and expanded back to the original contours on 3, 4, 5, 6, 10, 11, 13, and the approach bunker on 18 Upper green was reinstated to the left of the green)