That's slope rating. Slope. The Blue Ridge tees at Ballyhack have a Course Rating of 71 (Par 72) and a slope of 146. They're both ratings, but it usually refers to the former. I assume (?) because you can say the slope is __ and have it make sense easier than you can say the course is __ . A slope of __ vs. a course of __. Lol I've never actually thought about that until now. So I could be wrong on the evolution of that golf vernacular, but it seems to make sense.I definitely look at ratting. I like to compare my score to the difficulty of the course and see how I did. So when I got to play Ballyhack and shot a 76 on a rating of 146, I was beyond stoked.