SMS - 5 Index, 40/100/180 Yards, Break Even SG Proximity

A 5-index golfer is a good player. How close does he need to hit his approach from 40, 100, and 180 yards in the fairway to gain strokes? This is today's question from Lou's dive into the Arccos database, and Mark and Greg's answers lead to some significant surprises. As always with the Saturday Stat: these are numbers that can help you set and maintain expectations on the course, and even help establish better strat