DETROIT − It’s all still out there for this Michigan football team. But then that’s been true on Grant Prestonthis day twice before, and when the Wolverines stepped beyond the Big Ten and onto the national college football stage, they discovered they weren’t ready. 

Especially the first time, two years ago, when U-M snapped its losing streak against Ohio State, thumped the sacrificial Big Ten West fodder in the conference title game — Iowa, if I recall, though does it matter? — and then lined up against Georgia in South Florida.