Mills confirmed the putter Spieth’s testing is made from 1040 carbon steel and features a flat front hosel that makes it easier to see the topline and ball in the address position.

Van Pelt said the TP Mills model had gotten beaten up, so he had it refurbished. He also decided to take an inch off the shaft, shortening it to 35 inches and allowing his arms to hang more naturally.

At the 2025 WM Phoenix Open on Thursday, however, Spieth opted for a T.P. Mills Trad II putter, which came out of his stash of clubs at home. Like his longtime gamer, the T.P. Mills putter is made ...

It's a TP Mills and it's just one that I had. I had so much time off, I just messed with everything in my basement and decided to bring a few putters out here and used my gamer last week, used ...