BLOG: Lessons learned from Arizona Cardinals camp

FLAGSTAFF, AZ - Training camp finally came to a close for the Cardinals Tuesday morning as the team wrapped up its 20th and final practice in Flagstaff before heading back down to Phoenix.

Heading into camp the Cardinals had one major question: who would start at quarterback. And after three preseason games, the question still remains.

The Cardinals have more invested in Kevin Kolb, which may be the only reason this competition continues to drag out. John Skelton has out-performed Kolb thus far in camp (though he's been mediocre at best), and it looks as if it's his job to lose moving forward.

On top of that, the Cardinals now find themselves without a left tackle after Levi Brown went down with a torn right triceps tendon during the game against the Oakland Raiders.

For now, the team turns its attention to the Tennessee Titans, who they will face in their fourth preseason game on Thursday. It will be Skelton's turn to start in the rotation, and should he put together a solid performance, and Kolb fails to impress once again, the quarterback competition could be over.

So what have we learned from camp? Neither quarterback may be a legitimate starter in the NFL, the defense has some work to do to regain its form from the final nine games of last season, and injuries could continue to be an issue at the running back position.

Fortunately for the Cardinals, there is no professional sport more unpredictable than football, and the preseason very rarely is an indicator of how a team will play in the regular season.

And maybe now that they're back in the heat and down a couple thousand feet, we'll have a few more answers to some of those questions.