Though offense "sputtered" late in season Del Rio is bullish on future

Daily Raiders blog for NBC Bay Area website: At the midway point of the season, Oakland had one of the NFL's most explosive offenses. But a slump in the second half was cause for concern to many. http://www.nbcbayarea.com/news/sports/Del-Rio-Confident-That-Offense-Can-Regain-Explosiveness-364385931.html