49ers Number One overall draft pick QB Alex Smith

Here are some observations from the Oakland Raiders-San Francisco 49ers preseason game from Week 2:

Raiders

- QB Jason Campbell still takes too long to throw the ball and will be subject to additional contact when he drops back to pass. There's not much that his coaches can do about it. When quarterbacks reach a certain level of experience, they are generally left alone.

- They were clearly missing Darren McFadden's speed in the backfield in this game. RB Michael Bush will become more effective with McFadden's presence in the running game. Teams will have problems adjusting to his power and McFadden's speed during the course of a game.

- The much-maligned Darrius Heyward-Bey made two nice receptions in the first half. The third-year wide receiver never has had much of a problem getting open; it has been all about running the right route and not dropping the ball. Rookie WR Denarius Moore continues to look smooth. While he started this game, his role for the season isn't clear since three of Oakland's top players at the position are injured.

- DE Matt Shaughnessy is a virtual unknown to many fans outside Raider nation, but you'll hear more about him as time progresses. His interception of QB Alex Smith in the first half was when he dropped into coverage. The third-year pro, who started eight games last season, is ready to become a full-time starter this season. He had seven sacks and participated in 628 plays on defense last season.

49ers

- QB Alex Smith looked fairly sharp in this game. He did a good job of getting the ball out of his hands rather quickly. He made the one bad throw as noted above. Two of his incompletions were on dropped passes.

- The 49er offensive line pretty much dominated the Raider defensive line at the point of attack for much of the first half, opening up big holes for RBs Anthony Dixon and Kendall Hunter. While Dixon is ahead of Hunter on the depth chart, you could see how Hunter's ability to get to the second level attracted the 49ers to select him in the fourth round of this year's NFL Draft. He made several outstanding runs in this game, making the first unblocked defender miss.

- The one obvious need for the 49ers on offense is speed at wide receiver. While veteran Braylon Edwards runs well for his size, he's not a true speed receiver. Ted Ginn has obvious speed, but he's unlikely to see much playing time this season if the top-three receivers are healthy.

- New defensive coordinator Vic Fangio is known for his aggressiveness, so it will be interesting to see if he calls more blitzes than his predecessor, Greg Manusky.