Raiders' Kirk Cousins, Fernando Mendoza QB competition may be masking a bigger issue

It's been fun to follow the offseason action with the Las Vegas Raiders, as they juggle between veteran quarterback Kirk Cousins and rookie Fernando Mendoza. But, there's more to this team than just the quarterback position.Sure, the signal-caller is the heart of any NFL team's offense. But, there's no way a quarterback can win games without a solid offense and defense around him. That's why the Raiders would be smart to look at the rest of their lineup and take some time away from quarterback for a moment.Josh Edwards of CBS Sports has a piece out rattling off one position each NFL team should look at before the roster deadline has passed. For the Raiders, it's a spot that has nothing to do with quarterback.Raiders need to beef up their linebacker roomFor the Raiders, he says they absolut