That Kolbe escaped a red is every bit as baffling as H Watson escaping a yellow last week.
Im not sure how though?
after being played in the air
* first point of contact with the ground was Murray's foot
* second point of contact with the ground was his outstretched hand
* third point of contact seemed to be his back, just behind the shoulder.
I admit i didnt really look at that 3rd instance as the foot and hand were clearly before hand - so my understanding [1] is that Murray didnt make contact with the ground with his head or shoulder but his foot then hand. subsequent contacts being immaterial after the foot anyway.
[1] This may have changed in the last couple fo years or so and I am happy be better educated :-0
So based on the above YC seemed spot on.
That all said Ive long thought that this approach is rubbish, as the eventual punishment meted out is down to the reactions of the played player, ultimately, and in a worst case scenario actually promotes the idea of a player played in the air to tuck their arms in and to deliberately seek contact with the ground with their head in order to maximise their team's advantage from the incident!