Keeping your head still is absolutely critical to putting success, but it's hard to figure out if you're moving your noggin without a pair of eyes watching you.
Four-time PGA Tour winner Ryan Moore has come up with a training aid he uses at home to promote that stillness, and it looks like something out of a horror flick or "50 Shades of Grey."
Moore essentially created a head vice and mounted it to this wall so he could keep his head still over the ball and throughout the putting stroke. It seems Moore fashioned the training aid by mounting a pair of floating shelves sideways that are just wide enough so his head can fit in the gap.
It's easy to call it odd, but it makes a whole lot of sense.
Via Golf Digest