When Justin Thomas visited Scotty Cameron’s putting studio earlier this year, it was to more than exchange pleasantries.

Thomas ranked 131st in strokes-gained putting in 2016, and it helps explain why one of the game’s best ball-strikers wasn’t able to crack inside the top 30 of any of the year’s Major championships.

As Thomas told the legendary putter maker that day, he sensed an alignment problem, with many of his putts drifting left off the face. That sort of feedback resonated enough with Cameron to design a new putter for the rising star, a process that Cameron chronicled with the help of a GoPro.

How effective was Thomas’ visit that day? If you’re looking for numerical proof, you can go with some of the following: Thomas has since jumped up more than 100 spots in the strokes-gained putting ranking, he led the field in last week’s CIMB Classic with 29 birdies, and rolled in a 35-footer on the 71st hole to wrap up his second career win.

In the video, see for yourself how Cameron and Thomas collaborated on the new flatstick.