I would list the hiring of Flip Saunders as one of the worst mistakes of Joe's career. You have a team whose whole identity was defense with volatile egos that thrived under an alpha-dog of a coach in LB. You bring in a coach for whom defense is an afterthought who happens to be very soft on players. I see what he was trying to do; Detroit's stagnant offense needed to be improved. But, he couldn't foresee that the pricetag for that was giving up everything that made us a championship team. Imagine what would've happened if the Spurs fired Popovich with D'Antoni.