Was just catching up some paperwork, when I remembered that Pittsburgh signed CB Keiwan Ratliff today.
That means there's one team in the NFL which has yet to sign a free agent -- your Carolina Panthers.
Part of that's by design, and part's because of the Julius Peppers franchise tag.
Either way, they're the only ones left with zero signings. The Steelers, Indianapolis and San Diego have signed one each.
The Panthers will probably sign a couple of guys after the draft, after they see which positions they aren't able to fill.