Raiders linebacker Khalil Mack has two things on his mind this season: Winning the defensive rookie of the year award, and sacking Broncos quarterback Peyton Manning. Mack told the Raiders’ website that earning the rookie of the year award is his top goal for 2014. “I want to prove that they got a top guy,” Mack said. “My goal for my rookie season is to be defensive rookie of the year.” And Mack already has November 9 circled on his calendar. That’s when the Broncos come to town, giving Mack his first shot at the quarterback he most wants to hit. “I’m looking forward to playing against Peyton Manning,” Mack said. “I think going against the best quarterback in the game right now is going to be a big deal. Especially if you can put him on his back.”