BB1

The DASS BB1 Fitz Proto dates to 2020, per theclubhouse.blog, which describes it as an exact copy of the Tracy II, built by Bettinardi. The "DASS" designation and the "Fitz" name point to a putter made for Matt Fitzpatrick, and theclubhouse.blog ties the head directly to him as its notable user.

What theclubhouse.blog reports beyond the build is significant: it credits this putter with a US Open win in 2022. That's a single publication's account, not a verified record and not something confirmed by Bettinardi itself, but it's the detail that gives this particular head its weight within the BB1 line. Most BB1 releases are cataloged by spec and finish. This one is cataloged, per that report, by what it did on a golf course.

There's no maker-published page or in-house review on file for this specific proto, so what we hold on it is essentially theclubhouse.blog's account: a Tracy II copy, made by Bettinardi, associated with Fitzpatrick, and connected to a major win. Readers weighing this one against the rest of the BB1 run should treat that provenance as reported, not established, and draw their own conclusions about how much a tour link like that ought to matter.