Jim Harbaugh earned his first win over a ranked opponent as Michigan coach on Saturday with a resounding 31-0 rout of BYU that improved the Wolverines to 3-1 on the season. The former coach lost his first game to Utah, but hasn't lost since. The Cougars (2-2) had been ranked No. 22, and Michigan dominated from the outset in taking a 31-0 lead into the half.Quarterback Jake Rudock was steady if...