Among the top players off the board so far: Offensive tackle Trent Williams is headed back to San Francisco, tight ends Hunter Henry and Jonnu Smith are among the Patriots' signings, the Bengals landed pass-rusher Trey Hendrickson, and the Giants inked Kenny Golladay to a four-year pact. Washington and coach Ron Rivera also landed former Carolina playmaker Curtis Samuel, whom Rivera coached with the Panthers.
National NFL reporters Jeremy Fowler, Dan Graziano and Kevin Seifert are grading every big free-agent signing and trade for the next week, using our top 100 rankings as a guide. They'll grade each move from the team's perspective, using the contract terms, money numbers, player value and age, and history to assess the deal. Because the specific structure of contracts isn't always known when a deal is announced, they might delay grading a move until they know more about the guaranteed money.
They've graded more than 50 deals so far, with the most recent grades at the top. This piece will continue to be updated.