Five reasons why Raiders rehiring Jon Gruden is perfect Unknown 02:02 It makes perfect sense that Oakland is reuniting with Jon Gruden, the coach who helped get the franchise back into the Super Bowl more than a decade ago. Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsSan Francisco opens 4-game series at CincinnatiAthletics look to stop 6-game skid against PiratesChicago hosts St. Louis, looks to build on Lester's strong performanceArizona visits Colorado in division playNeeraj Chopra undergoes elbow surgery, doubtful for Doha WorldsMarlins host Braves, look to build on Smith's strong showing