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Raiders' mailbag: Who will mentor Amari Cooper?

Bill Williamson: It's interesting. I recently talked to Tim Brown and he remarked how fortunate he was to have veterans such as James Lofton and Willie Gault in the locker room early in his career. With James Jones cut, the Raiders really don't have any veterans for Cooper to rely on. Michael Crabtree is 27, but he is kind of a quiet type. Still, I'm sure Crabtree will be available for Cooper if he has questions. I think Cooper will need to lean on his position coach, Rob Moore, who was a receiver in the NFL for 12 years.

BW: Jack Del Rio runs the team on the field and Reggie McKenzie runs the football operation as general manager. Nothing has changed. However, I do think Del Rio does have more juice than Dennis Allen did as a coach, and he should. Del Rio has nine years of head coaching experience. Allen was a first-time head coach. So, through his experiences, Del Rio has more to offer and the Raiders are taking advantage of that.

BW: I think it's going to be Rod Streater. He'd be a pretty solid No. 3 option. Streater, who was lost for the season in Week 3 last year with a broken foot, had 60 catches for 888 yards in 2013. I think he is still an ascending player. A top three-receiver rotation of Cooper, Crabtree and Streater is pretty solid and a huge improvement of what Derek Carr had to work with as a rookie in 2014.