Injuries are piling up fast just one month into the NFL season.

With so many notable players hitting injured reserve in recent weeks and more certain to wind up there in the coming months, it's critically important for teams to add depth.

There aren't many quality free agents left on the open market, but there are still a handful of players who could contribute in 2021.

With that in mind, here are the best free agents yet to be signed and some clubs they could land with in the coming weeks.

QB Cam Newton

Cam Newton is the best quarterback on the market right now.