Comparison of trajectories among three 7 irons

Centeredness of impact and a ball’s flying distance

Data: Average of flying distances of balls among the nearest 80% to the pin achieved by 20 mid- and high-level players who swing a driver at a head speed of 39 to 44 m/s

Landing locations of balls on or near the green

Data: Landing locations of balls among the nearest 90% to the pin achieved by 20 mid- and high-level players