Try Pat Perez's simple test to see if you can spot the line of the putt
Photo by Giovanni Reda
Everyone putts poorly at times, including me. Check this out: In 2016, I missed 32 of 70 attempts from four to eight feet. That got my attention. I wasn't giving any thought to how I wanted to approach my putting, and that had to change. I started by putting down chalk lines on a green, and what I found was, my eye line at address was way off. What my eyes saw as a straight line to the hole turned out to be well right of it. For a 15-foot putt, it was off by as much as a foot or more. That's a long way to be off for anyone, let alone a professional. -- with E. Michael Johnson
I realized I needed to change my head position to see the line correctly every time. That setup will be different for everyone, so it's trial and error. For me, it involved rotating my head a little toward the target. I just kept moving it until my eyes were matched with where the ball had to start to go in the hole. That head position might be different for you. To find it, pick out a medium-length putt where the correct line is obvious. Then address the ball, and let your head swivel slowly left or right seeing if you can get your eyes to match that line. The nonstarters will be readily apparent, but there will likely be a few head positions that feel like you've got it. You're close, but now it's time to fine-tune it.
Pick out a two- or three-foot putt. (Let's face it, if you can't get on line from this close, you're not going to be able to do it from 20 feet.) Keep adjusting your head until you're sure your eye position matches the line. It should be one of the positions you noted from farther out. That's the one you want for every putt going forward.
At the first tournament after changing my eye position, things felt awkward—like my eyes were oriented way left of where I wanted them to be. But over a few weeks, that feeling started to go away. Making more putts sure helped with that. Since then, I've won twice and had my two best years on tour. So check your eyes!
I've picked up almost three-quarters of a stroke on the greens since changing my eye line. That's three strokes over 72 holes.
2016 : -.421
2017–19 : .301