Still, the 49ers have made a few free agency additions. Pro Football Focus assigned a letter grade to every NFL team's free agency additions thus far. The 49ers received a below average grade of D for their two free agency additions in quarterback Mac Jones and wide receiver Demarcus Robinson.

The worldwide leader and top advanced stats outlet weigh in on the moves made by the Cowboys through the first three days of free agency.

Aaron Rodgers and Russell Wilson headline the biggest names yet unsigned. Here are the 10 best and projections on where they'll land.

The Chicago Bears made it a priority to shore up the trenches in free agency, and they did just that through some big trades and signings. The Bears overhauled the entire interior offensive line with the acquisitions of guard Joe Thuney (via trade with the Kansas City Chiefs ),