If Michigan plays well, they win. Purdue needs some help.
I expect a 24-13 type game but Purdue certainly has a chance
If you force Speight to throw the ball, he will make mistakes....especially when from behind. Harbaugh knows this and will try to limit his need to rely on him to win a game. My guess is that Harbaugh tries to simply out tough and out muscle Purdue (which a team hasn't either tried or been able to) to run them down in the late 3rd and 4th quarter...my guess is that is what Missouri wanted to do but when Purdue got up 21-0 in the first quarter, that went to hell and a hand basket.
The key will be if Purdue can get an early stop after scoring and then get another score. I think for Purdue to be successful, it'll require making the other team play from behind from multiple scores in the first half.