I don't think it would be that hard to figure out if 1 guy is finished at 280, another guy is on the 15th hole and is at 270, he needs to play the last 3 holes in less then 10 strokes to win. I have established what par for me is on my course for each hole. After keeping track of my scores for 3 months and what I score on each hole, I can tell you my par is quite a bit different than par on the card. There are just certain holes that I either always play less then par or over par when compared to par on the card. Knowing this when I step on each tee box has really helped me, as I am now not trying to beat a number on a card but my own personal number.