Mel Kiper had Brandon Graham going to the Raiders in one of his early mocks.
At 6'2", 263, Graham is not only athletic but also arguably the most versatile defender in the draft.
Though he is projected as an edge rusher as a 4-3 DE or a 3-4 OLB, in college he has seen action at ILB, OLB, DE, and even DT (in obvious passing situations).
The man dominated in the Senior Bowl and was named MVP. He had two sacks: one beating Ciron Black with the bull rush and the other beating Selvish Capers around the edge with pure speed. He also had five tackles, one for a loss, and a forced fumble.
He plays bigger than he is in the run game and is able to get to the QB with his speed and power, as well as a vast variety of moves. Out of all DE-OLB prospects, he may very well have the best technique and be the most polished.
In the Combine he did nothing but impress. He showed off his athleticism in every event, including a 4.71 40-yard dash and 31 reps in the bench press.
But despite his tremendous ability and success, his critics have alot to say—mainly about his size. At only 6'2", some say he is too small to be a 4-3 DE or 3-4 OLB.
Also, many suspect he has reached his peak. Because of his frame he has little room to gain mass, and because of his already great technique he has already hit his full potential in that area.
They also say he just doesn't have the experience to to play linebacker effectively in the NFL.
Graham likely already has a chip on his shoulder from the criticism he's received. If the Raiders reached for him, that chip would only get bigger.
Though he is among the draft's most polished defenders, the Raiders should not draft him eighth overall, as D-end isn't their biggest need.