The obligatory quarterback competition is always good for eight months of infighting, factionalizing and other fun among the fan base. But for most coaches, the last week of preseason practice is no time for uncertainty: By the time the initial depth charts for opening weekend hit the stands Monday, the summer-long debates over signal-callers at Arizona State, Colorado, Colorado State, Kansas, Kansas State, Kentucky, Louisville, Memphis, Oregon, Tennessee and Texas Tech had all been definitively answered, for at least the first half of the first game. BYU couldn’t decide between junior Riley Nelson and heralded freshman Jake Heaps, so it went ahead and committed to playing both in a two-QB rotation; ditto Mississippi State for at least the opener, where the Bulldogs expect to play both Chris Relf and Tyler Russell against Memphis. Anything to get a firm plan down.

That’s one way to look at it. Another way is to let it play out until the last possible minute while keeping everyone in the dark. If there’s anything to that approach, at least five teams are still on the right track:

• Michigan. Rich Rodriguez has “an idea” who might take the first snap against UConn, but whatever it is, he wasn’t sharing it on the Wolverines’ first depth chart, which heightened the never-ending debate between sophomores Tate Forcier and Denard Robinson by listing the official order as “Denard Robinson OR Tate Forcier OR Devin Gardner.”

Best guess: September heroics notwithstanding, Forcier’s height and mediocre arm/athleticism always threatened to relegate him to placeholder status until Robinson and/or Gardner were seasoned enough to unleash their Pat White and Vince Young vibes, respectively, without also serving up a steady diet of turnovers when the ball leaves their hands. It didn’t help Forcier’s cause that he served up four interceptions himself against Ohio State in his last start, and seemed to lose some of his teammates over the summer after losing ground to Robinson in the spring. Given the success of Rodriguez’s “Spread and Shred” behind White at West Virginia (as well as similarly scrambly types Rasheed Marshall at WVU and Woody Dantzler at Clemson), take Robinson as the primary with regular cameos and a late-season push from Gardner if things start to veer off-track.

• Nebraska. The offense was so bad last year –