What's in a number for Terrelle Pryor?

ALAMEDA, Calif. -- Sure, Terrelle Pryor wore No. 2 in college at Ohio State. And yes, the jersey was available in Oakland when Al Davis used a third-round supplemental draft pick on Pryor in 2011.

But there was also a reason he was not allowed to wear it. Put simply, it brought back too many negative memories and, perhaps unfairly, comparisons to the last Raiders quarterback to sport it -- JaMarcus Russell.

So yeah, Raiders quarterback coach John DeFilippo experienced déjà vu when Pryor showed up at the end of training camp wearing No. 2, having turned in the No. 6 he wore the first two years of his NFL career.

DiFilippo, you’ll recall, is in his second tour of duty with the Raiders, having previously served as Oakland’s quarterback coach in 2007, Russell’s rookie year, and 2008.

“The first day, I kind of did a double-take,” DiFilippo said, referring to when he saw Pryor wearing No. 2.

“But after the first day ... You know, I had nothing but the utmost respect for JaMarcus and for this organization. JaMarcus is still a friend of mine. I’ve coached two No. 2’s. That’s the way I look at it. I’ve coached two No. 2’s for the Raiders. Both guys are fine young men.”

But while Russell is considered by many to be the biggest bust in NFL draft history, Pryor is about to make his first start under center at the O.co Coliseum on Sunday against Jacksonville.