10:37 a.m.: The NFL free agency period finally is here. The league’s free agents officially hit the market at noon ET, and there could be some significant shakeups around the NFL. For example, a loaded group of free agent running backs that includes Doug Martin, Matt Forte, Lamar Miller, Arian Foster, Chris Ivory and more could change the dynamic on many teams. Plus, things already are heating up before free agency begins with some news from ESPN’s Dianna Marie Russini and Ed Werder. Click for the top free agents at every position>> Thumbnail photo via Troy Taormina/USA TODAY Sports Images ...