(AP) — Washington State coach Mike Leach is shaking up the Cougars' underperforming defense in the wake of defensive coordinator Tracy Claeys' abrupt resignation. The Cougars have made some personnel changes on a squad that is yielding 30 points per game, ranking it 10th in the Pac-12. Leach says the team is also simplifying defensive schemes that he believes were too complicated. Washington State's next game is at No. 18 Arizona State on Saturday.