Three things: Cardinals-Titans

Three things to watch for Thursday night in the Arizona Cardinals' fourth exhibition game, this one at Tennessee (ESPN, 8 p.m. ET):

1. Skelton's rhythm. The Cardinals have outlined a few points of emphasis for quarterback John Skelton. Rhythm is a primary one. They want to see Skelton run the offense at a quick tempo, delivering the ball on time and from the right spots to promote accuracy. Skelton is starting this game, but Kevin Kolb could get a chance with the starters as well. Can one of these quarterbacks make a compelling case for the starting job? For Kolb, staying in the pocket and getting rid of the football remain top priorities.

2. Beanie Wells' debut. The Cardinals' starting running back is scheduled to play in a game for the first time since last season. He's coming off knee surgery. Arizona needs him to stay healthy. Last week, fellow running back Ryan Williams made a successful return from a more serious knee operation. I'm interested in seeing whether each man's presence pushes the other to step up his game.

3. The offensive tackles. This will be the Cardinals' first game since losing left tackle Levi Brown to a potentially season-ending torn triceps tendon. Arizona plans to filter several players through both tackle spots while searching for the best combinations. D'Anthony Batiste, D.J. Young and Bobby Massie are three players to watch.