A day after his controversial hire, the NFL's Jacksonville Jaguars said Friday that director of sports performance Chris Doyle has resigned from his position."Chris Doyle came to us this evening to submit his resignation and we have accepted." Jaguars head coach Urban Meyer said in a statement. "Chris did not want to be a distraction to what we are building in Jacksonville. We are responsible for all aspects of our program and, in retrospect, should have given greater consideration to how his appointment may have affected all involved. We wish him the best as he moves forward in his career." The former Iowa strength and conditioning coach's resignation follows backlash stemming from his tenure at the University of Iowa.