The Raiders were expected to fire offensive coordinator Greg Knapp and other offensive staff members this week, according to the San Francisco Chronicle, and a source informed of the news confirmed to NFL.com's Ian Rapoport that Knapp, linebackers coach Johnny Holland and two other unnamed offensive coaches are out.
The Raiders later announced in a release that Knapp, Holland, special teams coordinator Steve Hoffman and offensive line coach Frank Pollack have been relieved of duties.
Knapp preferred a zone scheme in the running game, which collapsed this season. The Raiders finished 28th in the NFL in rushing at just 89 yards per game. They were a top-seven rushing unit over the previous two years. Their supposed star rusher, Darren McFadden, finished with 707 rushing yards and a 3.3 yards-per-carry average.
Assuming the Raiders find an OC who can implement a running game more suited to McFadden's strengths, he should return to RB1 territory again next season.