Tiger?One of my good friends is a 5.6 index and shot a 69 (-3) in October of this year from our 1-up tees which are 6500yds and rated at 72.5 or something. This was one of the better rounds of the year at our club and tied for the low score of any round at our club on the Black or Gold (tips) tees in 2023. So it's definitely possible and in your range
Please, someone ask who it was tied with.