Michael Lombardi of The NFL Network writes that the Vikings were forced to make a change at quarterback because of Donovan McNabb's poor work ethic. Minnesota rookie Christian Ponder will make his first NFL start on Sunday afternoon against Green Bay. "Signing McNabb after his horrible year in Washington, ignoring the horror stories about his lack of preparation for the game, was their first mistake," Lombardi writes. "McNabb is at a point in his career that he does not seem to want to put in the time, willing to show up late for meetings and practice, and expects to just play well. He failed to really grasp the offense in Minnesota (as he did in Washington), having trouble spitting the plays out quickly -- which meant the play sheet on his arm got bigger and bigger. It did not take long before McNabb's lack of commitment was seen by the older players, causing them to understand that a move had to be made. One thing I have learned over my 20 years in the league is you can't fool the players, especially ones who have seen what it takes to be successful."