Raiders defense in 2013 has improved significantly

Daily Raiders blog for NBC Bay Area website: In 2012, the Raiders' defense was one of the worst in league, allowing the fifth-most points in the NFL. This year, Oakland is better in all areas, thanks to coordinator Jason Tarver and an influx of veterans. http://www.nbcbayarea.com/news/sports/Raiders-Defense-Has-Made-Huge-Strides-228339051.html