Michigan entered Happy Valley on Saturday night with one thing it thought was reliable.

If Saturday proved anything, it proved that Michigan’s problems are layered well below the surface.

Just like benching John O’Korn in favor of Brandon Peters on Saturday wasn’t going to stop Michigan from taking that medicine from the Nittany Lions for four quarters.

More: Michigan has too many problems, not enough answers vs. Penn State.

More: Michigan still winless vs. Top 25 on road since 2006.Yeah, Michigan’s 5-2.But it’s also 1-2 over the past three weeks and 6-4 over its last 10 games.

Perhaps most surprising, Michigan looked unprepared to play football when the game began.

Michigan gets Rutgers and Minnesota at home over the next two weeks for games the Wolverines will be favored and expected to win.

At some point Michigan is going to have to find out what Peters can do in a real game.