What to make of cornerback Vontae Davis?

You knew this was coming. With HBO’s "Hard Knocks" around, the main concern from a football standpoint was that someone would get exposed.

It didn't take long for HBO to find its first goat in the premier episode Tuesday: Miami Dolphins cornerback Vontae Davis.

The former first-round pick has had a poor start to training camp. Davis ended 2011 on a high note with a string of good games but had his starting job quickly taken this summer by Richard Marshall after Davis had some bad practices. But HBO's all-access, behind-the-scenes look at Davis magnified the situation even more.

Davis came off on the show as lazy, immature and at times out of shape. He complained in the opening practices that he was "gassed" and wanted to hide it from the coaching staff. That shows lack of dedication in the offseason. Dolphins head coach Joe Philbin also complained how Davis curiously schedules bathroom breaks in the middle of practice when he should be getting reps or doing drills. This is not a good sign of professionalism.

The knock on Davis has always been his lack of maturity and focus. Last year he got suspended one game by Miami for getting into an altercation with former teammate Brandon Marshall in practice. Marshall was not suspended, which is an indication Davis started the situation.

This is a big fourth year for Davis, 24. The Dolphins need all their young players to step up, especially in the secondary. Miami had the 25th-rated pass defense last season. Marshall, a veteran free-agent signing, has been more professional and consistent in training camp. First-year Dolphins defensive coordinator Kevin Coyle is looking for players he can count on, and Davis hasn't proved that up to this point.