The team opted to let almost all of its own free agents walk. Instead, Oakland opted to bring in a lot of free agents, and the positions affected are all over the roster. This is clearly a roster in flux.
Still, with so much time left until the start of the season and with the draft still to come, the construction of the roster is far from complete. This is especially true considering that the Raiders are likely to draft at least two or three players they'll expect to start.
But with the number of starters already brought in, we can start to get a fairly accurate idea of what this roster will look like in the upcoming season.
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Article Source: Bleacher Report - Oakland Raiders