And they're not done yet even with opening kickoff 100 days away. After spending the 2018 season away from football, offensive guard Richie Incognito is making a return to the NFL, signing a one-year deal with the Raiders.
Incognito has had his fair share of success in the NFL, making the Pro Bowl in his last three seasons as a starter for the Buffalo Bills. He's also had his fair share of off-the-field issues, most notably his bullying and harassment allegations from former Miami Dolphins offensive lineman Jonathan Martin during his time in South Beach.
These allegations aside, Incognito has played well during the latter half of his career, and if he can return to that form he'll be a great signing for Oakland.
The Raiders have already brought free agents in this offseason to help improve their pass protection, signing tackle Trent Brown to a huge deal. Their offensive line allowed the fifth-most sacks last season, giving up 52.
They'll need all the help they can get along their O-line this season, and Richie Incognito should definitely be able to do that.