Mike McCarthy won’t countenance the idea of the Packers as underdogs

The Packers are sizable underdogs to the Seahawks — the biggest underdogs they have ever been in any of quarterback Aaron Rodgers’s starts. Moreover, the line has gone up since it opened Sunday night. Seattle, which was initially installed as a touchdown favorite, is now a consensus 7.5-point favorite in Nevada. However, Packers coach Mike…