09/25/2026
This is a laser zone for the knees. I like to see the shoulders turn 90 degrees in the backswing, but not at the expense of an unstable lower body. When the knees get too active it can lead to excessive tilting of the pelvis and shoulders, making it hard to time the swing. Notice how Jack, Nelly and Tiger keep some flex in their trail knee. It can extend but I wouldn’t want to see it straight.