Sigma

The Ping Sigma line, as we hold it, runs through two dated releases: the Sigma 2 in 2016 and a 2020 re-release folded into that year's broader Ping 2020 Putters. The core identity across both is adjustability. masterofthegreens.com credited the 2016 Sigma 2 with adjustable-length shafts and Dual-Density Face Technology, and by the time the 2020 re-release arrived, the same publication described it as carrying adjustable-length shafts and improved grip technology, framed as a re-release of Sigma 2 with minor adjustments rather than a clean break.

The adjustable-length mechanism itself drew more attention than perhaps any other feature in the line, and reviewers didn't always agree on the numbers. golfalot.com described the shaft as adjustable from 32 to 26 inches, repeating that figure across multiple notes, while australiangolfdigest.com.au described the underlying mechanism as a glass-reinforced high-strength nylon tube within the grip connecting to the main shaft. Golf Monthly simply called it a new adjustability system for length. Our own verified record, drawn from golfaustralia.com.au, puts the adjustable length range at 32 to 36 inches, a figure worth flagging against the 32 to 26 inch range other outlets reported. The maker's page lists the style as a traditional blade-style putter, per worldwidegolfshops.com.

Community and press reaction to the Sigma 2 generation was largely warm. golfalot.com called it their favorite of the three models tested, citing the face-balanced mallet shape and the long alignment line on the back. pluggedingolf.com wrote that the PING Sigma 2 putters are everything that you would expect from PING, loads of fitting options, great performance, plus something no one else has. nationalclubgolfer.com, testing the Fetch, Valor, and ZB 2 within the line, found the feel off the face absolutely fantastic, and golfaustralia.com.au said the Sigma 2 line seriously impressed given Ping's putter history. Not every note was unreserved; other opinion on record described the insert as initially feeling a little too soft and the putter wanting to fall back on its haunches at address, alongside foresomesports.com's more playful praise that it works incredibly well and feels great.

Across its two captured years, the Sigma line reads as a single sustained idea rather than a series of reinventions: a fitting-driven, adjustable-length putter that Ping carried from the 2016 Sigma 2 into a 2020 refresh with, by most editorial accounts, only minor changes to grip and adjustment hardware.