Because if their eyes aren’t in the right spot, their aim can feel off—even when it’s perfect. Justin Thomas uses the Groove Mirror to make sure his eyes are in the exact position where he can see the line of the putt accurately every time. When he trusts his setup, he trusts his stroke—no second-guessing, no last-minute adjustments, just pure confidence over the ball.

JT isn’t just checking his alignment; he’s training his body to naturally find this perfect setup on the course. By reinforcing the same position over and over, he builds muscle memory so that when it matters most, he steps into every putt with total confidence. If one of the best players in the world relies on the Groove Mirror to sharpen his putting, why wouldn’t you? Explore his go-to training aid and the tools that pair perfectly with it below!