The Raiders are one of three teams who made a few big moves, but still are bottom teams along with the Titans and Jaguars, all in the AFC.
Fantasy and Training Camp Outlook
QB

Derek Carr is a developing starter in Oakland, and they struggle to find a backup. But I think if Carr struggles, start Christian Ponder at quarterback. He tops Matt McGloin in the race for backup. Ponder got a little playing time with the Vikings last year, but was a third string quarterback. He can take his career up a notch.
RB

They lost key RB Darren McFadden, long time Raider, but have plenty of reserves. They snagged strong third string Roy Helu, and former Colt underdog Trent Richardson, and still have Latavius Murray and fullback Marcel Reece. Murray will fight Richardson for the lead spot, while the other is left a reserve. Most say Murray, but veteran Richardson should take it from young Latavius Murray in my opinion. They also let go of veteran Maurice Jones-Drew, left a free agent.
WR

Hopefully Michael Crabtree can rebound to take the lead role, but if not, they only have Andre Holmes, former Pat Kenbrell Thompkins, and developing rookie Amari Cooper. Meanwhile those guys do show power, and could be decent. I have an especially good feeling about Cooper.
TE

Mychal Rivera could be the starter again, but I would give it to rookie Clive Walford. The smart drafting Raiders snagged him and Cooper in the first three rounds.
Defense

This defense is one of he worst in the league, but Justin Tuck and Khalil Mack should lead the defense. I expect it to improve from last year, probably leaving the Jags in the bottom spot.
The Raiders now have a few sparking veterans, but are dominant in young talent drafted ver the past couple years. Smart in the draft, and free agency.