The acquisition of Osemele is big because it's a smart play. Since Carr already is locked in as a long-term starter, the prudent move is to do everything possible to keep him safe. Osemele was the best available offensive lineman on the open market, a player some deemed one of the five best available free agents in the game. His versatility (he played left guard, left tackle and right tackle in Baltimore) gives the Raiders plenty of options as they try to stabilize the protection for Carr.