Here’s why Phil Mickelson is experimenting with an arm-lock putting grip (

Mickelson’s putting system has been altered in time for a new PGA Tour season.

With the PGA Tour’s one-week offseason now in the rearview, some players are already tinkering with new gear or playing styles in the first week of the new season. Count Phil Mickelson among them.

Mickelson is playing with a new(ish) putter this week at the Fortinet Championship in Napa, Calif., and it appears to be of the arm-lock variety. Really, Mickelson is using that classic blade putter he has used throughout his career, but the grip extension on it makes it seem like a new club altogether.

“I’ve been messing with it for about six weeks,” Mickelson said after a first-round 70 Thursday. “It takes a little getting used to, but it seems like I’ve had moments where I just start rolling it in from everywhere.”

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